Pair comparison
Singapore is 1.0 hours behind Japan. Their business-hour overlap is 8 hours per day.
Singapore
Capital: Singapore
Fri · Apr 24 · UTC+08:00
Japan
Capital: Tokyo
Fri · Apr 24 · UTC+09:00
Overlap window: 01:00 → 09:00 UTC · 8h per day.
Both teams may be off on the dates above — useful for sprint planning and launch calendars.