Use this GMT to RET time converter to compare United Kingdom and Réunion time instantly. RET is 4 hours ahead of GMT, so 9:00 AM GMT becomes 1:00 PM RET and 5:00 PM GMT becomes 9:00 PM RET. The page is useful for business-hours overlap, international calls, remote-team handoffs, webinars, and travel planning, with daylight saving adjustments handled automatically.
Use this GMT to RET converter to compare United Kingdom and Réunion time, check the 4 hours gap, and confirm the right slot for calls, handoffs, and deadlines. Good overlap starts around 9:00 AM GMT / 1:00 PM RET.
Converting between Greenwich Mean Time and Reunion Time means accounting for a 4 hours gap — here's how to do it in under 10 seconds with no sign-up.
Pick the date and time in Greenwich Mean Time (UTC +0) that you want to convert. Hit "Now" to load the current GMT time instantly, or use "+1h" to step forward and compare.
The equivalent Reunion Time (UTC +4) time appears immediately. Since RET is 4 hours ahead of GMT, most daytime conversions stay on the same calendar day.
Click "Copy Time" to grab the RET result for your calendar or message. Use "+1d" to check how the conversion shifts across dates — useful when Daylight Saving Time changes the gap.
When someone in Universal suggests 9:00 AM GMT, that's 1:00 PM RET. This converter shows the overlap so both sides agree on one slot — no back-and-forth.
Late-night GMT times can land on a different date in RET because of the 4 hours offset. The converter labels "next day" or "previous day" next to the result so you never send a message a day early or miss a deadline.
Daylight Saving adjustments can widen or narrow the GMT–RET gap by an hour. During transition weeks many people get it wrong. This converter pulls the current UTC offsets automatically, so the result is right even on the changeover day.
Product launches, sports matches, and webinars are often announced in GMT. Convert the event time to RET so you know exactly when to tune in — with a 4 hours difference, a morning event in Universal falls during work hours in Réunion.
Quick-reference conversion table covering every hour of the day at a glance.
Greenwich Mean Time to Reunion Time full day schedule
| Greenwich Mean Time | Reunion Time |
|---|---|
| 12:00 AM |
4:00 AM
|
| 1:00 AM |
5:00 AM
|
| 2:00 AM |
6:00 AM
|
| 3:00 AM |
7:00 AM
|
| 4:00 AM |
8:00 AM
|
| 5:00 AM |
9:00 AM
|
| 6:00 AM |
10:00 AM
|
| 7:00 AM |
11:00 AM
|
| 8:00 AM |
12:00 PM
|
| 9:00 AM |
1:00 PM
|
| 10:00 AM |
2:00 PM
|
| 11:00 AM |
3:00 PM
|
| 12:00 PM |
4:00 PM
|
| 1:00 PM |
5:00 PM
|
| 2:00 PM |
6:00 PM
|
| 3:00 PM |
7:00 PM
|
| 4:00 PM |
8:00 PM
|
| 5:00 PM |
9:00 PM
|
| 6:00 PM |
10:00 PM
|
| 7:00 PM |
11:00 PM
|
| 8:00 PM |
12:00 AM
(next day)
|
| 9:00 PM |
1:00 AM
(next day)
|
| 10:00 PM |
2:00 AM
(next day)
|
| 11:00 PM |
3:00 AM
(next day)
|
UK / Ireland / Iceland / Portugal / West Africa. Business hours 9 AM – 5:30 PM GMT typically. Note: London is on GMT in winter, BST (GMT+1) in summer — but "GMT" gets used loosely all year in scheduling contexts. Financial-services London anchors the European trading day.
Explore more GMT conversions for major business and travel corridors. Each page includes a 24-hour chart, time difference summary, and meeting overlap guidance.
Find the time difference from any major zone into Reunion Time. Use these pages when scheduling with Réunion from a different region.
