Saint-Denis keeps UTC+4 all year. There is no daylight saving time, so the clock never changes.
Saint-Denis and your time
Saint-Denis at a glance
| Country | Réunion |
|---|---|
| Region | Reunion |
| Capital of | Réunion |
| Time zone | Indian/Reunion |
| UTC offset now | UTC+4 |
| Daylight saving time | Not observed |
| Coordinates | 20.88° S, 55.45° E |
Saint-Denis time zone and clock changes
Saint-Denis follows the Indian/Reunion time zone and stays on UTC+4 all year. The tz database records no daylight saving time here since 1970.
As the capital of Réunion, Saint-Denis shares one clock with the whole country.
Clock changes in Saint-Denis, 2026 and 2027
No clock changes are scheduled in Saint-Denis for 2026 or 2027.
How far ahead or behind Saint-Denis is
When it is 9:00 AM in Saint-Denis, it is 12:00 AM in New York, 4:00 PM in Sydney and 9:00 PM (previous day) in Los Angeles.
| City | Time now | Difference now | In January | In July | Shared office hours |
|---|---|---|---|---|---|
| New York (United States) | --:-- | 9 h behind | 9 h behind | 8 h behind | None |
| Los Angeles (United States) | --:-- | 12 h behind | 12 h behind | 11 h behind | None |
| London (United Kingdom) | --:-- | 4 h behind | 4 h behind | 3 h behind | 4 h |
| Paris (France) | --:-- | 3 h behind | 3 h behind | 2 h behind | 5 h |
| Dubai (United Arab Emirates) | --:-- | Same time | Same time | Same time | 8 h |
| Mumbai (India) | --:-- | 1 h 30 min ahead | 1 h 30 min ahead | 1 h 30 min ahead | 6 h 30 min |
| Singapore | --:-- | 4 h ahead | 4 h ahead | 4 h ahead | 4 h |
| Tokyo (Japan) | --:-- | 5 h ahead | 5 h ahead | 5 h ahead | 3 h |
| Sydney (Australia) | --:-- | 7 h ahead | 7 h ahead | 6 h ahead | 1 h |
| UTC | --:-- | 4 h behind | 4 h behind | 4 h behind | 4 h |
Because Saint-Denis keeps one offset all year, any change in the gap comes from the other city’s daylight saving time. Compare the January and July columns.
Shared office hours counts the time when the clock reads between 9 AM and 5 PM in both cities on the same day.
Sunrise, sunset and day length in Saint-Denis
Today
| Sunrise | --:-- |
|---|---|
| Sunset | --:-- |
| Day length | -- |
| Solar noon | --:-- |
Being in the tropics, Saint-Denis sees little change in day length: the longest day (13 hours 24 minutes) is only 2 hours 32 minutes longer than the shortest (10 hours 52 minutes). Sunrise stays between 5:28 AM and 6:56 AM all year.
Daylight through the year in Saint-Denis
| Date | Sunrise | Sunset | Day length | |
|---|---|---|---|---|
| March equinox | March 20 | 6:22 AM | 6:29 PM | 12 h 7 min |
| June solstice | June 21 | 6:54 AM | 5:46 PM | 10 h 52 min |
| September equinox | September 23 | 6:07 AM | 6:14 PM | 12 h 7 min |
| December solstice | December 22 | 5:35 AM | 6:59 PM | 13 h 24 min |
When the sun is highest in Saint-Denis
Saint-Denis lies close to the centre of its time zone, so the sun is highest at about 12:20 PM on standard time, close to clock noon.
Places close to Saint-Denis
Every city below shares Saint-Denis’s clock.
| City | Distance | Time now | Difference |
|---|---|---|---|
| Saint-Paul | 23 km (15 mi) | --:-- | Same time |
| Vacoas (Mauritius) | 221 km (137 mi) | --:-- | Same time |
| Port Louis (Mauritius) | 228 km (142 mi) | --:-- | Same time |
Plan around the time in Saint-Denis
- Convert a time to or from Saint-Denis: pick a date and time and see it in every city on your list.
- Add Saint-Denis to your world clock to keep it next to your own time.
- Find a meeting time that falls inside office hours in Saint-Denis and the other cities you work with.
- Open a full-screen clock for your own time zone.
Frequently asked questions
What time zone is Saint-Denis in?
Saint-Denis uses the Indian/Reunion time zone, which is UTC+4 all year.
Does Saint-Denis use daylight saving time?
No. Saint-Denis stays on UTC+4 all year, so the time difference to places without daylight saving time never changes.
What is the time difference between Saint-Denis and New York?
Saint-Denis is 9 hours ahead of New York in January and 8 hours ahead of New York in July, because New York moves its clocks for daylight saving time and Saint-Denis does not.
How long is the longest day in Saint-Denis?
About 13 hours 24 minutes, around the December solstice. The shortest day, around the June solstice, has about 10 hours 52 minutes of daylight.
Time zone rules: IANA tz database, version 2026e. Place names and coordinates: GeoNames. Sunrise and sunset are calculated from the coordinates and can differ by a minute or two from local almanacs.