San Juan to Tokyo time
Looking to build a web app, a mobile app or a website for your shop or business, or want more leads? Boffin Coders, who build timezones.in, can help. Talk to us → (opens in a new tab)
AST · UTC−4 → UTC+9 · UTC+9
San Juan is 13 hours behind Tokyo
San Juan · AST
Saturday, 7 November 2026
Tokyo · UTC+9
Sunday, 8 November 2026
When are both sides at work?Each column is one hour of the day in the first city; the second row shows the same moment in the other city. Gold means office hours (09:00–18:00), dusk means awake but off work, night means asleep (23:00–07:00). Columns where both rows are gold are good meeting times.
No overlap in standard working hours. Closest workable window: 20:00–23:00 in San Juan, which is 09:00–12:00 in Tokyo.
Working (09–18) Awake, off the clock Asleep (23–07)
Pick a time and share it
14:57 Sat 7 Nov San Juan = 03:57 Sun 8 Nov Tokyo
Hour-by-hour conversion
| San JuanEvery hour of today in the first city, with the matching time in the second. “Next day” means the calendar date is already tomorrow there. The highlighted row is right now. | Tokyo | |
|---|---|---|
| 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 | 00:00next day | |
| 12:00 | 01:00next day | |
| 13:00 | 02:00next day | |
| 14:00 | 03:00next day | Now |
| 15:00 | 04:00next day | |
| 16:00 | 05:00next day | |
| 17:00 | 06:00next day | |
| 18:00 | 07:00next day | |
| 19:00 | 08:00next day | |
| 20:00 | 09:00next day | |
| 21:00 | 10:00next day | |
| 22:00 | 11:00next day | |
| 23:00 | 12:00next day |
Planning between San Juan and Tokyo
San Juan (America/Puerto_Rico) is UTC−4 and Tokyo (Asia/Tokyo) is UTC+9 right now. Working hours are shown as 09:00–18:00 local, sleeping hours as 23:00–07:00.
- 09:00 in San Juan is 22:00 in Tokyo
- 12:00 in San Juan is 01:00 in Tokyo
- 15:00 in San Juan is 04:00 in Tokyo
- 18:00 in San Juan is 07:00 in Tokyo
Reverse: Tokyo to San Juan. Or open both in the meeting planner with more cities.