Machine-readable rule source
Exact offsets and transition rows come from the IANA Time Zone Database as exposed by the deployed runtime. IANA publishes tzdb releases when governments change civil-time rules.
Check IANA Time Zone DatabaseIANA timezone
Africa/Bissau.
GMTUTC+00:00Standard time
Africa/Bissau is the IANA timezone for Guinea-Bissau, currently at UTC+00:00 (GMT). It does not observe daylight saving time; the offset stays the same year-round. The zone covers 4 cities listed below, with live clocks updating every second.
Offset, DST behavior, and city coverage are refreshed from the live timezone dataset during the page revalidation window.
Current time in GMT
--:--:--Africa/Bissau · UTC+00:00
Abbreviation
GMT
UTC Offset
UTC+00:00
DST Status
Standard Time
Country
Guinea-Bissau
Timezone planning depth
What Africa/Bissau is useful for
A timezone page should do more than define an offset. These notes connect the zone to city clocks, DST behavior, converters, and adjacent country planning pages.
Zone identity
Africa/Bissau is rendered as GMT at UTC+00:00 for Guinea-Bissau. The IANA zone ID is the stable key; the abbreviation is only the short display label.
DST behavior
Africa/Bissau has no scheduled offset transitions in the next 12 months. The displayed UTC+00:00 is stable year-round, which makes long-horizon scheduling, billing, and report-window math straightforward.
City coverage
4 indexable cities sit in this zone after locale and crawl-safety filters, with Bissau, Gabú, Bafatá, and Xitole among the examples shown.
Conversion handoff
The fastest jumps from GMT are the curated converter pairs to CET, IST, JST, and AEST.
Adjacent planning context
The most useful next steps from this timezone page are city clocks. Those links keep the zone page connected to real user tasks rather than stopping at an offset definition.
Abbreviations across the year
Africa/Bissau resolves to multiple display abbreviations in the next 12 months: BST and GMT. The abbreviation rotates with the offset, which is why long-lived calendar entries should be anchored to the IANA zone instead of a saved abbreviation.
Offset stability
Africa/Bissau spends about 365 days at UTC+00:00 across the forward 12-month window, which makes it stable across the entire window. The remaining time is split across the other offsets listed in the year-of-DST card.
Peer zones at the same offset
Other IANA zones currently aligned at UTC+00:00 include Etc/UTC, Africa/Abidjan, Africa/Bamako, Africa/Conakry, and Africa/Dakar. Same-offset peers can drift apart later in the year if their DST rules differ, so a peer match today is not a permanent equivalence.
Country roster
Africa/Bissau is used as the primary clock anchor for Guinea-Bissau. The roster is derived from country-zone mappings, so it reflects which jurisdictions adopt this IANA zone rather than which countries happen to share its current offset.
Timezone abbreviations can be ambiguous. The IANA zone name is the canonical key used for clocks, city pages, and conversion math.
Source-change watch
When timezone policy changes
Policy-source boundary
No jurisdiction-specific policy source is attached for Africa/Bissau. Confirm legal clock-change announcements with the relevant government or time authority before relying on future rules.
Year-round offset behavior
Africa/Bissau across the next 12 months
Africa/Bissau has no scheduled offset transitions in the next 12 months. The displayed UTC+00:00 (GMT) stays stable across the window. That makes long-horizon scheduling, billing, and report-window math straightforward — meeting times do not need to track DST boundaries here.
Coverage reference
What Africa/Bissau covers
Country roster
Peer zones at UTC+00:00 right now
Etc/UTCAfrica/AbidjanAfrica/BamakoAfrica/ConakryAfrica/DakarAmerica/DanmarkshavnAfrica/FreetownAtlantic/St_Helena
Same-offset peers can drift apart later in the year if their DST rules differ; today's offset match is not a permanent equivalence.
Convert GMT Time
Cities in GMT
FAQ
- What is the current UTC offset for Africa/Bissau?
- Africa/Bissau is currently at UTC+00:00 (GMT). The page revalidates weekly, but live clocks on this page tick from the IANA zone in real time.
- Does Africa/Bissau observe daylight saving time in 2027?
- No. Africa/Bissau has no scheduled offset transitions in the next 12 months and currently stays at UTC+00:00 year-round.
- Which cities use Africa/Bissau?
- Africa/Bissau is the canonical clock for cities including Bissau, Gabú, Bafatá, Xitole. The page lists 4 indexable cities in this zone after locale and crawl-safety filters.
- What abbreviations does Africa/Bissau use?
- Africa/Bissau resolves to BST, GMT across the next 12 months — the abbreviation rotates with each DST transition. Calendar entries should anchor to the IANA zone instead of an abbreviation so the right offset is used in each window.
- Why does Guinea-Bissau use Africa/Bissau?
- Guinea-Bissau is mapped to Africa/Bissau as one of its IANA zones in the country-zone catalog. The IANA zone records each jurisdiction's historical offset and DST rule changes; Africa/Bissau stores the rules used by Guinea-Bissau (ISO GW).
Related timezone pages
Most timezone-reference visits naturally branch into a country page, abbreviation page, or converter workflow.
Time in Guinea-Bissau
Open the country hub for city clocks, holidays, airports, and broader timezone context.
Timezone converter
Move from zone reference into hour-by-hour practical conversions.
Browse city pages
Use the human-readable city index if the next question is really about a city, not a zone string.