GMT to Heidelberg Time Converter
CET is 1 hour ahead of GMT. 9:00 AM GMT = 10:00 AM CET.
CET is 1 hour ahead of GMT at the moment. To convert GMT to Heidelberg Time, add 1 hour to the GMT time: 9:00 AM GMT = 10:00 AM CET.
GMT (GMT) is used in Same offset as UTC. The UK and Ireland use GMT in winter; Iceland, Ghana and Senegal all year. Heidelberg Time (Heidelberg time) is used in Heidelberg, Germany.
The UK is on GMT only in winter; in summer it uses BST (UTC+1).
GMT to Heidelberg Time time conversion table
GMT to Heidelberg Time on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| GMT | Heidelberg Time | Day |
|---|---|---|
| 12:00 AM GMT | 1:00 AM CET | night |
| 1:00 AM GMT | 2:00 AM CET | night |
| 2:00 AM GMT | 3:00 AM CET | night |
| 3:00 AM GMT | 4:00 AM CET | night |
| 4:00 AM GMT | 5:00 AM CET | night |
| 5:00 AM GMT | 6:00 AM CET | — |
| 6:00 AM GMT | 7:00 AM CET | — |
| 7:00 AM GMT | 8:00 AM CET | — |
| 8:00 AM GMT | 9:00 AM CET | — |
| 9:00 AM GMT | 10:00 AM CET | work hours |
| 10:00 AM GMT | 11:00 AM CET | work hours |
| 11:00 AM GMT | 12:00 PM CET | work hours |
| 12:00 PM GMT | 1:00 PM CET | work hours |
| 1:00 PM GMT | 2:00 PM CET | work hours |
| 2:00 PM GMT | 3:00 PM CET | work hours |
| 3:00 PM GMT | 4:00 PM CET | work hours |
| 4:00 PM GMT | 5:00 PM CET | — |
| 5:00 PM GMT | 6:00 PM CET | — |
| 6:00 PM GMT | 7:00 PM CET | — |
| 7:00 PM GMT | 8:00 PM CET | — |
| 8:00 PM GMT | 9:00 PM CET | — |
| 9:00 PM GMT | 10:00 PM CET | night |
| 10:00 PM GMT | 11:00 PM CET | night |
| 11:00 PM GMT | 12:00 AM CET | next day |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert GMT to Heidelberg Time
Add 1 hour to the GMT time to get Heidelberg Time.
Example: 9:00 AM GMT = 10:00 AM CET.
Across midnight: 11:00 PM GMT = 12:00 AM CET (next day). The date changes, so always check the day as well as the hour.
Time difference between GMT and Heidelberg Time
The time difference between GMT and Heidelberg Time is not the same all year, because the two sides change for daylight saving time on different dates. In 2026 it works out like this:
- 1 Jan 2026 – 28 Mar 2026: Heidelberg Time is 1 hour ahead of GMT.
- 29 Mar 2026 – 24 Oct 2026: Heidelberg Time is 2 hours ahead of GMT.
- 25 Oct 2026 – 31 Dec 2026: Heidelberg Time is 1 hour ahead of GMT.
GMT and Heidelberg Time during daylight saving time
- GMT does not observe daylight saving time; it stays on UTC+0 all year.
- Heidelberg Time next changes on 28 Mar 2027: clocks go forward one hour at 01:59 local time, from CET (UTC+1) to CEST (UTC+2).
Best time for a meeting between GMT and Heidelberg Time
GMT and Heidelberg Time share 7 hours of the 9 AM–5 PM working day. Any time between 9:00 AM and 4:00 PM GMT lands between 10:00 AM and 5:00 PM CET, inside working hours for both.
GMT to Heidelberg Time FAQ
What is the time difference between GMT and Heidelberg Time?
Right now CET is 1 hour ahead of GMT. The gap changes 3 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM GMT in Heidelberg Time?
9:00 AM GMT is 10:00 AM CET.
What is 12 PM (noon) GMT in Heidelberg Time?
12:00 PM GMT is 1:00 PM CET.
Is Heidelberg Time ahead of or behind GMT?
CET is 1 hour ahead of GMT, so it is later in Heidelberg Time than in GMT.
Does GMT change for daylight saving time?
No. GMT stays on the same offset all year, so conversions never shift for daylight saving time.
Does Heidelberg Time change for daylight saving time?
Yes. Heidelberg Time next changes on 28 Mar 2027, when clocks go forward one hour from CET to CEST.
What is the best time for a meeting between GMT and Heidelberg Time?
GMT and Heidelberg Time share 7 hours of the 9 AM–5 PM working day. Any time between 9:00 AM and 4:00 PM GMT lands between 10:00 AM and 5:00 PM CET, inside working hours for both.
Related conversions
Convert Heidelberg Time to GMT
Convert GMT to other time zones
Convert other time zones to Heidelberg Time
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.