Current time in Saint John's
Current time
America/Antigua · AST (UTC-04:00)
Neighbouring days
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Zone details
| Country / region | Antigua and Barbuda |
|---|---|
| IANA time zone | America/Antigua |
| Current UTC offset | UTC-04:00 |
| Zone abbreviation | AST |
| Capital | Yes |
Daylight saving
Saint John's does not observe daylight saving and stays on UTC-04:00 all year.
This moment in other formats
| Unix timestamp | 1789943320 |
|---|---|
| ISO 8601 | 2026-09-20T18:28:40-04:00 |
| ISO week | 2026-W38 |
| Day of the year | day 263 of 365 |
| Days left this year | 102 days |
These values update with the clock above and use the local date in Saint John's.
Difference from a reference city
Saint John's is 5 hours behind London.
Both places are on the same date right now.
Working-hours overlap with London
About 4 h of overlap each day.
- Saint John's 09:00–13:00 matches London 14:00–18:00
Working hours are taken as 09:00–18:00 local on each side, using the offsets for today.
Hour-by-hour conversion
Calculated for 2026-09-20 local time in Saint John's. The two places start and end daylight saving on different dates, so another day can give a different result.
| Saint John's (source) | London (target) |
|---|---|
| 00:00 | 05:00 |
| 01:00 | 06:00 |
| 02:00 | 07:00 |
| 03:00 | 08:00 |
| 04:00 | 09:00 |
| 05:00 | 10:00 |
| 06:00 | 11:00 |
| 07:00 | 12:00 |
| 08:00 | 13:00 |
| 09:00 | 14:00 |
| 10:00 | 15:00 |
| 11:00 | 16:00 |
| 12:00 | 17:00 |
| 13:00 | 18:00 |
| 14:00 | 19:00 |
| 15:00 | 20:00 |
| 16:00 | 21:00 |
| 17:00 | 22:00 |
| 18:00 | 23:00 |
| 19:00 | 00:00 next day |
| 20:00 | 01:00 next day |
| 21:00 | 02:00 next day |
| 22:00 | 03:00 next day |
| 23:00 | 04:00 next day |
How to use this page
The top of the page shows the current date and time in Saint John's, ticking in the America/Antigua zone. To convert a specific moment to another city, use the comparison link below, where you can enter a date and time.
How the time is calculated
Saint John's is bound to the IANA identifier America/Antigua. The server resolves the UTC offset and daylight saving state for the requested moment and renders the first view; the browser then keeps time in the same zone and re-syncs when the tab comes back to the foreground. No fixed offset stands in for the zone, and no zone is guessed from the city name.
FAQ
- Which time zone is Saint John's in?
- Saint John's uses the IANA identifier America/Antigua, currently UTC-04:00. The same identifier can have different offsets on different dates; the value above is for the current moment.
- Does Saint John's observe daylight saving time?
- The daylight saving section above answers this from the IANA database: cities that do not observe it show no changeover text, and cities that do show the current state and the next local changeover time.
- How many hours is Saint John's from London?
- Calculated for the current moment: Saint John's is 5 hours behind London. The section above also shows each side’s local date at that same instant. Because the two places start and end daylight saving on different dates, the gap changes during the year — use the fixed-date mode in the comparison tool for another date.
- Can a cached page show the wrong time?
- No. The first render uses server time as a starting value, and as soon as the page loads the browser recomputes the current moment for America/Antigua and takes over the clock, so a cache hit still shows the time at which you opened it.