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Timezone converter
EST to JST currently uses Eastern Time in America/New_York and Japan Time in Asia/Tokyo as the live reference pair, with a +13h live gap. EST to JST matters whenever New York City and Tokyo need to coordinate across a +13h gap. The EST side covers United States and Canada, while JST covers Japan — that country mix is the practical reason this conversion shows up in calendars rather than the abstract offset math.
Last updated recently. Offset math, DST behavior, and city coverage on both sides are refreshed from the live timezone dataset during the page revalidation window.
From
Eastern Time
America/New_York · EDT -04:00
Major markets in this grouping include New York City, Toronto, Brooklyn, Queens.
To
Japan Time
Asia/Tokyo · GMT+9 +09:00
Major markets in this grouping include Tokyo, Yokohama, Osaka, Nagoya.
Current gap
+13h
EST -04:00 vs JST +09:00
9-to-5 overlap
No shared block
Meetings usually need an early or late handoff.
Representative countries
United States, Canada, and Haiti / Japan
Based on the busiest city and zone usage found in the current dataset.
EST (New York City, -04:00) to JST (Tokyo, +09:00) is currently a +13h conversion. Live coverage on the EST side is anchored by New York City, Toronto, Brooklyn, and Queens; the JST side draws from Tokyo, Yokohama, Osaka, and Nagoya.
EST to JST matters whenever New York City and Tokyo need to coordinate across a +13h gap. The EST side covers United States and Canada, while JST covers Japan — that country mix is the practical reason this conversion shows up in calendars rather than the abstract offset math.
This pair is trans-Pacific, with one side in the Americas and the other in Asia or Oceania. The +13h gap is large enough that morning on one side reliably overlaps evening on the other, which is why this conversion mostly serves global supply chains, gaming launch schedules, and follow-the-sun engineering.
EST follows seasonal clock changes through America/New_York, while JST stays on a fixed offset year-round. That asymmetry is the real differentiator on this page: the gap widens or narrows by an hour twice a year, so calendar invites scheduled in one season often look wrong in the other.
EST and JST sit exactly 13h apart, which leaves no shared 9-to-5 block. Live meetings have to bend one side's day, so most teams settle for one of two narrow windows: very early on the late side, or very late on the early side. That makes async messages, recorded standups, and clear handoff notes more valuable than calendar invites.
Reference zone, current offsets, country and city anchors, overlap math, and date-shift answers for EST to JST.
Reference pair
America/New_York -> Asia/Tokyo
Live offsets
EST -04:00 vs JST +09:00
Meaning split
Eastern Time / Japan Time
Country anchors
United States, Canada, and Haiti -> Japan
City anchors
New York City, Toronto, Brooklyn, Queens -> Tokyo, Yokohama, Osaka, Nagoya
Workday overlap
No strict 9-to-5 overlap in the current offset state
Morning answer
9 AM EST = 10:00 PM JST, same day
Evening answer
6 PM EST = 7:00 AM JST, next day
Same-offset labels can share the same hour while still landing in different countries, calendars, cities, and workday windows. These notes show the practical context behind this conversion.
EST to JST is pinned to America/New_York -> Asia/Tokyo, with the shorthand labels shown as context. The city anchors are New York City, Toronto, Brooklyn, Queens on the EST side and Tokyo, Yokohama, Osaka, Nagoya on the JST side, with +13h between the live reference zones.
The 12 popular-hour answers include 3 same-day conversions, 9 next-day conversions, and 0 previous-day conversions. That distribution is what separates this page from a static offset chart.
Nearby labels sharing a current offset include EDT (From side), GMT+9 (To side), KST (To side), PWT (To side), WIT (To side), YAKT (To side). They may match mathematically, but their country calendars, city anchors, and common search intent differ from this exact pair.
EST: United States (US); 1508 mapped cities; capital Washington, D.C.; English; USD United States dollar | EST: Canada (CA); 310 mapped cities; capital Ottawa; English, French; CAD Canadian dollar | EST: Haiti (HT); 30 mapped cities; capital Port-au-Prince; French, Haitian Creole; HTG Haitian gourde | EST: Jamaica (JM); 11 mapped cities; capital Kingston; English, Jamaican Patois; JMD Jamaican dollar | EST: Mexico (MX); 6 mapped cities; capital Mexico City; Spanish; MXN Mexican peso | JST: Japan (JP); 1296 mapped cities; capital Tokyo; Japanese; JPY Japanese yen
Offset behavior, DST gap changes, local calendar evidence, and the day-shift pattern across the most common conversion hours.
EST/JST is a long-haul handoff gap: America/New_York currently reads -04:00, Asia/Tokyo reads +09:00, and the live delta is +13h. This class decides whether the page behaves like a same-day planner or a handoff planner.
America/New_York changes from -04:00 (EDT) to -05:00 (EST) on November 1, 2026 at about 1:00 AM.
No country holiday snapshot is attached to this exact pair yet, so the page leans on city anchors, IANA zones, offsets, and the live conversion table instead of pretending a local calendar exists.
Across the 12 popular-hour answers, this pair has 3 same-day answers, 9 next-day answers, 0 previous-day answers. That mix is specific to the current America/New_York -> Asia/Tokyo relationship and helps users see whether dates must be written explicitly in invites, travel plans, and release schedules.
Same-offset converter clusters can look identical if the page only shows a numeric offset. This audit states whether the route should be indexed, which canonical peer it follows when consolidated, and what pair-specific evidence keeps the page useful.
This pair remains indexable because the route has enough pair-specific context: America/New_York -> Asia/Tokyo, country anchors, city anchors, calendar notes, and day-shift examples.
EST and JST are not currently a same-offset pair; the live delta is +13h. Same-offset neighbors are still listed because users often confuse nearby abbreviations.
EDT (From side, -04:00), GMT+9 (To side, +09:00), KST (To side, +09:00), PWT (To side, +09:00), WIT (To side, +09:00), YAKT (To side, +09:00) The page keeps these labels visible so SGT/HKT/GST-style clusters do not blur into one generic offset page.
EST/JST uses 3 same-day answers, 9 next-day answers, 0 previous-day answers; 0h strict workday overlap; source zones America/New_York and Asia/Tokyo; country anchors United States, Canada, and Haiti -> Japan.
Common places, calendars, markets, languages, and operating contexts behindEST and JST.
JST
JST is Japan civil time, centered on Tokyo, Yokohama, Osaka, Nagoya, Sapporo, Fukuoka, and the rest of the Japanese domestic timetable. The useful context is Japan's no-DST posture, yen-denominated business cycles, Tokyo Stock Exchange timing, rail and aviation punctuality, anime/game/media release schedules, and holiday clusters such as Golden Week and year-end closures.
JST
A JST conversion is often searched by teams coordinating with Japan specifically, not merely UTC+9. Product launches, live streams, travel arrivals, and support handoffs should account for Japanese business etiquette, local public holidays, and the difference between Japan's stable clock and regions where daylight saving changes the counterpart offset.
Same-offset conversions can still land in different public-holiday, language, currency, and city-anchor contexts. These rows use the country profile and holiday snapshots behind each side of the pair.
EST
1,508 mapped city anchors; zones America/New_York.capital Washington, D.C.; English; USD United States dollar
Holiday snapshot: New Year's Day (Jan 1, Public) · Martin Luther King, Jr. Day (Jan 19, Public) · Lincoln's Birthday (Feb 12, Observance) · Presidents Day (Feb 16, Public) · Good Friday (Apr 3, Public)
EST
310 mapped city anchors; zones America/Atikokan, America/Toronto.capital Ottawa; English, French; CAD Canadian dollar
Holiday snapshot: New Year's Day (Jan 1, Public) · Louis Riel Day (Feb 16, Public) · Islander Day (Feb 16, Public) · Heritage Day (Feb 16, Public) · Family Day (Feb 16, Public)
EST
30 mapped city anchors; zones America/Port-au-Prince.capital Port-au-Prince; French, Haitian Creole; HTG Haitian gourde
Holiday snapshot: New Year's Day (Jan 1, Public) · Ancestry Day (Jan 2, Public) · Epiphany (Jan 6, Public) · Carnival (Feb 16, Public) · Carnival (Feb 17, Public)
EST
11 mapped city anchors; zones America/Jamaica.capital Kingston; English, Jamaican Patois; JMD Jamaican dollar
Holiday snapshot: New Year's Day (Jan 1, Public) · Ash Wednesday (Feb 18, Public) · Good Friday (Apr 3, Public) · Easter Monday (Apr 6, Public) · Labour Day (May 23, Public)
EST
6 mapped city anchors; zones America/Cancun.capital Mexico City; Spanish; MXN Mexican peso
Holiday snapshot: New Year's Day (Jan 1, Public) · Constitution Day (Feb 2, Public) · Benito Juárez's birthday (Mar 16, Public) · Maundy Thursday (Apr 2, Bank) · Good Friday (Apr 3, Bank)
JST
1,296 mapped city anchors; zones Asia/Tokyo.capital Tokyo; Japanese; JPY Japanese yen
Holiday snapshot: New Year's Day (Jan 1, Public) · Coming of Age Day (Jan 12, Public) · Foundation Day (Feb 11, Public) · The Emperor's Birthday (Feb 23, Public) · Vernal Equinox Day (Mar 20, Public)
Pair-specific dossier
EST to JST is a North America-to-Japan conversion used for games, anime, electronics, product launches, finance operations, airline schedules, and distributed engineering. Japan is a stable UTC+9 clock with no current DST, so the Eastern-side seasonal change is what moves the gap.
During literal EST winter alignment the gap is fourteen hours. During EDT, the gap is thirteen hours. That changes whether a US morning meeting lands late at night in Tokyo or whether a Japan morning release reaches the US the previous evening.
JST should not be collapsed into KST just because Korea shares the same offset. Japan has its own public holidays, Golden Week, Obon travel peaks, JPX market calendar, and Japanese-language operating context.
Most often used for US East Coast teams converting Japanese product-launch, market, media, game, or travel schedules into their local day.
A 09:00 EST meeting is 23:00 JST, usually too late for Japan; a Tokyo 09:00 release is 19:00 EST on the previous calendar day. The pair is better for async launch monitoring than routine live meetings.
Japan's Golden Week, Marine Day, Mountain Day, Respect for the Aged Day, Culture Day, Labor Thanksgiving Day, and New Year closures do not align with US/Canadian holidays. JPX market closures add another layer for finance users.
Not the same as EST/KST. Japan and South Korea currently share UTC+9, but Korea's Chuseok/Seollal calendar, KRX market hours, and business context differ from Japan's Golden Week/JPX context.
Three-letter abbreviations are ambiguous. The IANA zone identifier above is the canonical reference; software, contracts, and calendar storage should use it instead of the abbreviation.
These are the labels most likely to be confused with either side of this conversion. A matching UTC offset does not mean the same country, calendar, market, source convention, or user intent.
EST and EDT match on offset right now, but the page should not collapse them: they carry different city anchors, country calendars, currencies, holidays, and user intent.
EST and EEST are close enough to be confused in search, but they are not the same clock label and should be pinned to exact IANA zones.
EST and EET are close enough to be confused in search, but they are not the same clock label and should be pinned to exact IANA zones.
EST and AEDT are close enough to be confused in search, but they are not the same clock label and should be pinned to exact IANA zones.
EST and AEST are close enough to be confused in search, but they are not the same clock label and should be pinned to exact IANA zones.
EST and WIT are close enough to be confused in search, but they are not the same clock label and should be pinned to exact IANA zones.
JST and GMT+9 match on offset right now, but the page should not collapse them: they carry different city anchors, country calendars, currencies, holidays, and user intent.
JST and KST match on offset right now, but the page should not collapse them: they carry different city anchors, country calendars, currencies, holidays, and user intent.
JST and PWT match on offset right now, but the page should not collapse them: they carry different city anchors, country calendars, currencies, holidays, and user intent.
JST and WIT match on offset right now, but the page should not collapse them: they carry different city anchors, country calendars, currencies, holidays, and user intent.
JST and YAKT match on offset right now, but the page should not collapse them: they carry different city anchors, country calendars, currencies, holidays, and user intent.
JST and ACDT are close enough to be confused in search, but they are not the same clock label and should be pinned to exact IANA zones.
Abbreviations with the same UTC offset can still represent different countries, cities, currencies, languages, and civil-time histories. This roster keeps theEST to JST page grounded in those concrete places.
EST: United States (US); 1508 mapped cities; zones America/New York; city anchors New York City (America/New_York, pop 8,804,190), Brooklyn (America/New_York, pop 2,736,074), Queens (America/New_York, pop 2,316,841), Philadelphia (America/New_York, pop 1,573,916); official United States of America; capital Washington, D.C.; region Americas; subregion North America; population 340,110,988; area 9,525,067 km2; languages English; currency USD United States dollar.
EST: Canada (CA); 310 mapped cities; zones America/Atikokan, America/Toronto; city anchors Toronto (America/Toronto, pop 2,794,356), Montréal (America/Toronto, pop 1,762,949), Ottawa (America/Toronto, pop 1,017,449), Mississauga (America/Toronto, pop 717,961); official Canada; capital Ottawa; region Americas; subregion North America; population 41,651,653; area 9,984,670 km2; languages English, French; currency CAD Canadian dollar.
EST: Haiti (HT); 30 mapped cities; zones America/Port-au-Prince; city anchors Port-au-Prince (America/Port-au-Prince, pop 1,234,742), Carrefour (America/Port-au-Prince, pop 442,156), Delmas (America/Port-au-Prince, pop 382,920), Port-de-Paix (America/Port-au-Prince, pop 306,217); official Republic of Haiti; capital Port-au-Prince; region Americas; subregion Caribbean; population 11,867,032; area 27,750 km2; languages French, Haitian Creole; currency HTG Haitian gourde.
EST: Jamaica (JM); 11 mapped cities; zones America/Jamaica; city anchors Kingston (America/Jamaica, pop 937,700), New Kingston (America/Jamaica, pop 583,958), Spanish Town (America/Jamaica, pop 145,018), Portmore (America/Jamaica, pop 102,861); official Jamaica; capital Kingston; region Americas; subregion Caribbean; population 2,825,544; area 10,991 km2; languages English, Jamaican Patois; currency JMD Jamaican dollar.
EST: Mexico (MX); 6 mapped cities; zones America/Cancun; city anchors Cancún (America/Cancun, pop 888,797), Chetumal (America/Cancun, pop 169,028), Playa del Carmen (America/Cancun, pop 149,923), Cozumel (America/Cancun, pop 77,236); official United Mexican States; capital Mexico City; region Americas; subregion North America; population 130,575,786; area 1,964,375 km2; languages Spanish; currency MXN Mexican peso.
JST: Japan (JP); 1296 mapped cities; zones Asia/Tokyo; city anchors Tokyo (Asia/Tokyo, pop 9,733,276), Yokohama (Asia/Tokyo, pop 3,777,491), Osaka (Asia/Tokyo, pop 2,753,862), Nagoya (Asia/Tokyo, pop 2,332,176); official Japan; capital Tokyo; region Asia; subregion Eastern Asia; population 123,210,000; area 377,930 km2; languages Japanese; currency JPY Japanese yen.
Same-offset converter pages can look deceptively alike. These records pin the page to the exact abbreviations, IANA zones, countries, and city anchors behind EST and JST.
EST (est) is not marked ambiguous in the abbreviation catalog. Meaning records: Eastern Time at UTC-05:00; listed zones America/Atikokan; America/Cancun; America/Cayman; America/Jamaica; America/Panama; America/Nassau; America/New York; America/Port-au-Prince; America/Grand Turk; America/Toronto; source label Eastern Time - Atikokan.
EST currently maps to 8 country footprints in the converter dataset: United States (US), Canada (CA), Haiti (HT), Jamaica (JM), Mexico (MX), Panama (PA), Bahamas (BS), Cayman Islands (KY). The footprint spans 9 IANA zones across 10 city anchors.
EST city anchors in this indexed page family: New York City [new-york-city-US, US, America/New_York, pop 8,804,190]; Toronto [toronto-CA, CA, America/Toronto, pop 2,794,356]; Brooklyn [brooklyn-US, US, America/New_York, pop 2,736,074]; Queens [queens-US, US, America/New_York, pop 2,316,841]; Montréal [montreal-CA, CA, America/Toronto, pop 1,762,949]; Philadelphia [philadelphia-US, US, America/New_York, pop 1,573,916]; Manhattan [manhattan-5125771-US, US, America/New_York, pop 1,487,536]; The Bronx [the-bronx-US, US, America/New_York, pop 1,385,108]; Port-au-Prince [port-au-prince-HT, HT, America/Port-au-Prince, pop 1,234,742]; Ottawa [ottawa-CA, CA, America/Toronto, pop 1,017,449].
EST: United States (US); 1508 mapped cities; zones America/New York; city anchors New York City (America/New_York, pop 8,804,190), Brooklyn (America/New_York, pop 2,736,074), Queens (America/New_York, pop 2,316,841), Philadelphia (America/New_York, pop 1,573,916); official United States of America; capital Washington, D.C.; region Americas; subregion North America; population 340,110,988; area 9,525,067 km2; languages English; currency USD United States dollar. EST: Canada (CA); 310 mapped cities; zones America/Atikokan, America/Toronto; city anchors Toronto (America/Toronto, pop 2,794,356), Montréal (America/Toronto, pop 1,762,949), Ottawa (America/Toronto, pop 1,017,449), Mississauga (America/Toronto, pop 717,961); official Canada; capital Ottawa; region Americas; subregion North America; population 41,651,653; area 9,984,670 km2; languages English, French; currency CAD Canadian dollar. EST: Haiti (HT); 30 mapped cities; zones America/Port-au-Prince; city anchors Port-au-Prince (America/Port-au-Prince, pop 1,234,742), Carrefour (America/Port-au-Prince, pop 442,156), Delmas (America/Port-au-Prince, pop 382,920), Port-de-Paix (America/Port-au-Prince, pop 306,217); official Republic of Haiti; capital Port-au-Prince; region Americas; subregion Caribbean; population 11,867,032; area 27,750 km2; languages French, Haitian Creole; currency HTG Haitian gourde. EST: Jamaica (JM); 11 mapped cities; zones America/Jamaica; city anchors Kingston (America/Jamaica, pop 937,700), New Kingston (America/Jamaica, pop 583,958), Spanish Town (America/Jamaica, pop 145,018), Portmore (America/Jamaica, pop 102,861); official Jamaica; capital Kingston; region Americas; subregion Caribbean; population 2,825,544; area 10,991 km2; languages English, Jamaican Patois; currency JMD Jamaican dollar. EST: Mexico (MX); 6 mapped cities; zones America/Cancun; city anchors Cancún (America/Cancun, pop 888,797), Chetumal (America/Cancun, pop 169,028), Playa del Carmen (America/Cancun, pop 149,923), Cozumel (America/Cancun, pop 77,236); official United Mexican States; capital Mexico City; region Americas; subregion North America; population 130,575,786; area 1,964,375 km2; languages Spanish; currency MXN Mexican peso.
JST (jst) is not marked ambiguous in the abbreviation catalog. Meaning records: Japan Time at UTC+09:00; listed zones Asia/Tokyo; source label Japan Time - Tokyo, Yokohama, Osaka, Nagoya.
JST currently maps to 1 country footprint in the converter dataset: Japan (JP). The footprint spans 1 IANA zone across 10 city anchors.
JST city anchors in this indexed page family: Tokyo [tokyo-JP, JP, Asia/Tokyo, pop 9,733,276]; Yokohama [yokohama-JP, JP, Asia/Tokyo, pop 3,777,491]; Osaka [osaka-JP, JP, Asia/Tokyo, pop 2,753,862]; Nagoya [nagoya-JP, JP, Asia/Tokyo, pop 2,332,176]; Sapporo [sapporo-JP, JP, Asia/Tokyo, pop 1,973,832]; Fukuoka [fukuoka-JP, JP, Asia/Tokyo, pop 1,612,392]; Kawasaki [kawasaki-JP, JP, Asia/Tokyo, pop 1,538,262]; Kobe [kobe-JP, JP, Asia/Tokyo, pop 1,525,152]; Kyoto [kyoto-JP, JP, Asia/Tokyo, pop 1,463,723]; Saitama [saitama-JP, JP, Asia/Tokyo, pop 1,324,854].
JST: Japan (JP); 1296 mapped cities; zones Asia/Tokyo; city anchors Tokyo (Asia/Tokyo, pop 9,733,276), Yokohama (Asia/Tokyo, pop 3,777,491), Osaka (Asia/Tokyo, pop 2,753,862), Nagoya (Asia/Tokyo, pop 2,332,176); official Japan; capital Tokyo; region Asia; subregion Eastern Asia; population 123,210,000; area 377,930 km2; languages Japanese; currency JPY Japanese yen.
EST is a North or South American civil-time label, currently 4h behind UTC at -04:00. The label covers 10 IANA zones across 9 countries, with New York City as the busiest live reference. The busiest cities using EST in the current catalog are New York City, Toronto, Brooklyn, Queens, and Montréal. The lead live reference on this page is New York City (America/New_York), currently at -04:00 (EDT). Those cities are what give EST its actual feel rather than the abstract offset. EST currently shows -04:00, but America/New_York observes seasonal clock changes — the next transition is around November 1, 2026. That means the offset on this page is a snapshot, not a permanent fact, so long-range scheduling should pin the underlying IANA zone instead of the abbreviation.
EST reads cleanly across the Americas in this dataset, but the same letters can mean different things elsewhere (notably CST, EST, and IST overlap with non-American labels). Pin the IANA zone when the audience is international. America/New_York has an upcoming offset change on November 1, 2026. After that point, EST on this page will read a different UTC offset until the next transition, so any saved timestamp should anchor to the IANA zone rather than the abbreviation. For precise work, the safest equivalent of EST is the exact IANA zone used by your city or system. America/New_York sits at -04:00, behind UTC, which means daily logs in this zone reach a new calendar date after UTC does — relevant for date-aligned reports and billing cutoffs.
EST should not be blindly swapped with nearby labels. Adjacent references in the catalog: EDT (-04:00, Shares the eastern time family); EEST (+03:00, Shares the eastern time family); EET (+03:00, Shares the eastern time family); AEDT (+10:00, Shares the eastern time family); AEST (+10:00, Shares the eastern time family); WIT (+09:00, Shares the eastern time family).
EST has 1 meaning record, offset range UTC-05:00 to UTC-04:00, labels Eastern Time, and 9 country footprints across 10 IANA zones.
JST is an Asian civil-time label, currently 9h ahead of UTC at +09:00. The lead reference is Tokyo, and the wider grouping reaches 1 country through 1 IANA zone. The busiest cities using JST in the current catalog are Tokyo, Yokohama, Osaka, Nagoya, and Sapporo. The lead live reference on this page is Tokyo (Asia/Tokyo), currently at +09:00 (GMT+9). Those cities are what give JST its actual feel rather than the abstract offset. JST is stable on Asia/Tokyo year-round, with no seasonal clock changes in the next year. That makes it a low-friction choice for recurring meetings and broadcast schedules — but software still prefers the IANA zone because governments can change civil-time rules independently of the short code.
JST resolves cleanly here, but Asian labels often share letters with American or European ones — IST is shared between India and Israel, for instance. Pinning Asia/Tokyo avoids that whole class of confusion. Asia/Tokyo does not show an offset change in the next year, which makes JST predictable for short-term scheduling. Predictable is not the same as permanent — civil-time rules still get changed by governments on relatively short notice. For precise work, the safest equivalent of JST is the exact IANA zone used by your city or system. Asia/Tokyo sits at +09:00, ahead of UTC, which means daily logs in this zone reach a new calendar date before UTC does — a small detail that breaks date-based reporting if missed.
JST should not be blindly swapped with nearby labels. Adjacent references in the catalog: GMT+9 (+09:00, Currently sits on the same UTC offset); KST (+09:00, Currently sits on the same UTC offset); PWT (+09:00, Currently sits on the same UTC offset); WIT (+09:00, Currently sits on the same UTC offset); YAKT (+09:00, Currently sits on the same UTC offset); ACDT (+09:30, Runs on a nearby UTC offset).
JST has 1 meaning record, offset range UTC+09:00, labels Japan Time, and 1 country footprint across 1 IANA zone.
EST country anchor United States: The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic consisting of 50 states and a federal capital district, Washington, D.C. The 48 contiguous states border Canada to the north and Mexico to the south, with the semi-exclave of Alaska in the northwest and the archipelago of Hawaii in the Pacific Ocean. The United States also asserts sovereignty over five major island territories and various uninhabited islands in Oceania and the Caribbean. It is a megadiverse country, with the world's third-largest land area and third-largest population, exceeding 341 million. Source: Wikipedia.
JST country anchor Japan: Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asian mainland, it is bordered to the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea in the south. The Japanese archipelago consists of four major islands alongside 14,121 smaller islands. Japan is divided into 47 administrative prefectures and eight traditional regions, and around 75% of its terrain is mountainous and heavily forested, concentrating its agriculture and highly urbanized population along its eastern coastal plains. With a population of almost 123 million as of 2026, it is the world's 11th most populous country. Tokyo is the country's capital and largest city. Source: Wikipedia.
JST is Japan civil time, centered on Tokyo, Yokohama, Osaka, Nagoya, Sapporo, Fukuoka, and the rest of the Japanese domestic timetable. The useful context is Japan's no-DST posture, yen-denominated business cycles, Tokyo Stock Exchange timing, rail and aviation punctuality, anime/game/media release schedules, and holiday clusters such as Golden Week and year-end closures.
A JST conversion is often searched by teams coordinating with Japan specifically, not merely UTC+9. Product launches, live streams, travel arrivals, and support handoffs should account for Japanese business etiquette, local public holidays, and the difference between Japan's stable clock and regions where daylight saving changes the counterpart offset.
EST/JST uses America/New_York -> Asia/Tokyo, offset delta +13h, overlap 0h, route /convert/est/jst/, and live abbreviation readings EDT/GMT+9.
Reference fields include this converter pair's abbreviation records, representative IANA zones, current offsets, city anchors, country profiles, overlap math, conversion examples, and dossier notes.
EST coverage on this page is led by New York City, United States, Toronto, Canada, Brooklyn, United States, and Queens, United States, with 2 more in the live dataset. That mix is what makes EST feel anchored to East Coast and Central American business activity in practice rather than just an abbreviation on a chart.
JST coverage is led by Tokyo, Japan, Yokohama, Japan, Osaka, Japan, and Nagoya, Japan, with 2 more anchoring the wider label family. Combined with the EST side, this conversion ends up describing trans-Pacific outsourcing handoffs, gaming and entertainment release windows, and follow-the-sun engineering rotations.
Adjust the time. Digits roll like an odometer, and the swap button flips the zones.
Quick conversions for 9 AM, noon, 3 PM, 6 PM, and 9 PM based on today's local calendar.
| EST | JST | Day relation |
|---|---|---|
| 9:00 AM | 10:00 PMMon, May 25 | same day |
| 12:00 PM | 1:00 AMTue, May 26 | next day |
| 3:00 PM | 4:00 AMTue, May 26 | next day |
| 6:00 PM | 7:00 AMTue, May 26 | next day |
| 9:00 PM | 10:00 AMTue, May 26 | next day |
Quick conversions for 9 AM, noon, 3 PM, 6 PM, and 9 PM based on today's local calendar.
| JST | EST | Day relation |
|---|---|---|
| 9:00 AM | 8:00 PMSun, May 24 | previous day |
| 12:00 PM | 11:00 PMSun, May 24 | previous day |
| 3:00 PM | 2:00 AMMon, May 25 | same day |
| 6:00 PM | 5:00 AMMon, May 25 | same day |
| 9:00 PM | 8:00 AMMon, May 25 | same day |
EST to JST ranges from EST 9:00 AM (which lands at JST 10:00 PM) through EST 9:00 PM (JST 10:00 AM). Most of those slots fall on a different calendar day on the JST side, which is why this direction always needs explicit dates in invites and ticket comments — the time alone is not enough.
JST to EST ranges from JST 9:00 AM (which lands at EST 8:00 PM) through JST 9:00 PM (EST 8:00 AM). With no clean 9-to-5 overlap between JST and EST, both ends of this range push outside standard hours — useful for recorded standups and async work, awkward for live calls.
These direct answers are here for the exact-intent searches people actually use, like “10 AM EST to JST” or “4 PM EST in JST”.
8 AM EST = 9:00 PM JST (21:00). On today's live calendar that lands on Mon, May 25 in JST, which means the answer is a same day conversion rather than a static offset lookup.
9 AM EST = 10:00 PM JST (22:00). On today's live calendar that lands on Mon, May 25 in JST, which means the answer is a same day conversion rather than a static offset lookup.
10 AM EST = 11:00 PM JST (23:00). On today's live calendar that lands on Mon, May 25 in JST, which means the answer is a same day conversion rather than a static offset lookup.
11 AM EST = 12:00 AM JST (00:00). On today's live calendar that lands on Tue, May 26 in JST, which means the answer is a next day conversion rather than a static offset lookup.
12 PM EST = 1:00 AM JST (01:00). On today's live calendar that lands on Tue, May 26 in JST, which means the answer is a next day conversion rather than a static offset lookup.
1 PM EST = 2:00 AM JST (02:00). On today's live calendar that lands on Tue, May 26 in JST, which means the answer is a next day conversion rather than a static offset lookup.
2 PM EST = 3:00 AM JST (03:00). On today's live calendar that lands on Tue, May 26 in JST, which means the answer is a next day conversion rather than a static offset lookup.
3 PM EST = 4:00 AM JST (04:00). On today's live calendar that lands on Tue, May 26 in JST, which means the answer is a next day conversion rather than a static offset lookup.
4 PM EST = 5:00 AM JST (05:00). On today's live calendar that lands on Tue, May 26 in JST, which means the answer is a next day conversion rather than a static offset lookup.
5 PM EST = 6:00 AM JST (06:00). On today's live calendar that lands on Tue, May 26 in JST, which means the answer is a next day conversion rather than a static offset lookup.
6 PM EST = 7:00 AM JST (07:00). On today's live calendar that lands on Tue, May 26 in JST, which means the answer is a next day conversion rather than a static offset lookup.
9 PM EST = 10:00 AM JST (10:00). On today's live calendar that lands on Tue, May 26 in JST, which means the answer is a next day conversion rather than a static offset lookup.
The live gap is +13h right now, based on America/New_York at -04:00 and Asia/Tokyo at +09:00. America/New_York changes offset on November 1, 2026, so the gap moves to +14h after that transition.
There is no strict 9 AM to 5 PM overlap right now, so this pair is better for handoffs, travel planning, or async coordination than for midday meetings.
America/New_York
EDT · -04:00
Asia/Tokyo
GMT+9 · +09:00
These are the busiest live references selected from the abbreviation families on this page.
| EST | JST |
|---|---|
| 20:00 | 09:00 |
| 21:00 | 10:00 |
| 22:00 | 11:00 |
| 23:00 | 12:00 |
| 00:00 | 13:00 |
| 01:00 | 14:00 |
| 02:00 | 15:00 |
| 03:00 | 16:00 |
| 04:00 | 17:00 |
| 05:00 | 18:00 |
| 06:00 | 19:00 |
| 07:00 | 20:00 |
| 08:00 | 21:00 |
| 09:00 | 22:00 |
| 10:00 | 23:00 |
| 11:00 | 00:00 |
| 12:00 | 01:00 |
| 13:00 | 02:00 |
| 14:00 | 03:00 |
| 15:00 | 04:00 |
| 16:00 | 05:00 |
| 17:00 | 06:00 |
| 18:00 | 07:00 |
| 19:00 | 08:00 |
Countries represented here include United States, Canada, and Haiti.
Countries represented here include Japan.
Once a conversion pair matters, people usually need a city page, compare page, or a broader browse surface next.
Interactive converter
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