Daylight Savings Time Changes in Portugal 🇵🇹 (1931)
| Country: | Portugal |
| Capital: | Lisbon |
| Abbreviations: | PT, PRT |
| IANA Time Zones: | 4 |
| Dial Code: | +351 |
Daylight Savings Time Schedule and Information
Before
22
:
59
After
00
:
00
18 APR
18 Apr 1931 - Daylight Saving Time Starts
When local standard time is about to reach Saturday, 18 April 1931, 22:59 clocks are turned forward 1 hour to
Saturday, 18 April 1931, 00:00 local daylight time instead.
Sunrise and sunset will be about 1 hour later on 18 Apr 1931 than the day before. There will be more light in the evening.
Also called Spring Forward.
Before
23
:
59
After
23
:
00
3 OCT
03 Oct 1931 - Daylight Saving Time Ends
When local standard time is about to reach Saturday, 03 October 1931, 23:59 clocks are turned backward 1 hour to
Saturday, 03 October 1931, 23:00 local standard time instead.
Sunrise and sunset will be about 1 hour earlier on 03 Oct 1931 than the day before. There will be more light in the morning.
Also called Fall Back.
Daylight Savings Time Schedules by Districts in Portugal (1931)
| District | DST Start (Spring) | DST End (Fall) |
|---|---|---|
| Aveiro | 18 Apr 1931 | 03 Oct 1931 |
| Azores | 18 Apr 1931 | 03 Oct 1931 |
| Beja | 18 Apr 1931 | 03 Oct 1931 |
| Braga | 18 Apr 1931 | 03 Oct 1931 |
| Bragança | 18 Apr 1931 | 03 Oct 1931 |
| Castelo Branco | 18 Apr 1931 | 03 Oct 1931 |
| Coimbra | 18 Apr 1931 | 03 Oct 1931 |
| Évora | 18 Apr 1931 | 03 Oct 1931 |
| Faro | 18 Apr 1931 | 03 Oct 1931 |
| Guarda | 18 Apr 1931 | 03 Oct 1931 |
| Leiria | 18 Apr 1931 | 03 Oct 1931 |
| Lisbon | 18 Apr 1931 | 03 Oct 1931 |
| Madeira | 18 Apr 1931 | 03 Oct 1931 |
| Portalegre | 18 Apr 1931 | 03 Oct 1931 |
| Porto | 18 Apr 1931 | 03 Oct 1931 |
| Santarém | 18 Apr 1931 | 03 Oct 1931 |
| Setúbal | 18 Apr 1931 | 03 Oct 1931 |
| Viana do Castelo | 18 Apr 1931 | 03 Oct 1931 |
| Vila Real | 18 Apr 1931 | 03 Oct 1931 |
| Viseu | 18 Apr 1931 | 03 Oct 1931 |
DST Changes Summary for Portugal
| Date | Year | Change | Time | Details |
|---|---|---|---|---|
| 29 Mar | 2025 | Forward 1 hour | 23:59 ➜ 01:00 | Daylight Saving Start |
| 26 Oct | 2025 | Back 1 hour | 00:59 ➜ 00:00 | Daylight Saving End |
| 28 Mar | 2026 | Forward 1 hour | 23:59 ➜ 01:00 | Daylight Saving Start |
| 25 Oct | 2026 | Back 1 hour | 00:59 ➜ 00:00 | Daylight Saving End |
| 27 Mar | 2027 | Forward 1 hour | 23:59 ➜ 01:00 | Daylight Saving Start |
| 31 Oct | 2027 | Back 1 hour | 00:59 ➜ 00:00 | Daylight Saving End |
| 25 Mar | 2028 | Forward 1 hour | 23:59 ➜ 01:00 | Daylight Saving Start |
| 29 Oct | 2028 | Back 1 hour | 00:59 ➜ 00:00 | Daylight Saving End |
| 24 Mar | 2029 | Forward 1 hour | 23:59 ➜ 01:00 | Daylight Saving Start |
| 28 Oct | 2029 | Back 1 hour | 00:59 ➜ 00:00 | Daylight Saving End |
| 30 Mar | 2030 | Forward 1 hour | 23:59 ➜ 01:00 | Daylight Saving Start |
| 27 Oct | 2030 | Back 1 hour | 00:59 ➜ 00:00 | Daylight Saving End |
Read More About Daylight Savings Time
Common Questions about Daylight Savings Time Changes in Portugal
Does Portugal use Daylight Saving Time in 1931?
Yes, Portugal observes Daylight Saving Time during the 1931 calendar year. The country follows the practice of shifting clocks to better align waking hours with the available evening sunlight during the spring and summer months.
When do the clocks change next in Portugal?
The next scheduled time transition in Portugal will take place on Saturday, 18 April 1931. At 22:59 local time, clocks will be turned forward by 1 hour. This specific change marks the transition to daylight saving time starts.
Does all of Portugal follow the same time change schedule?
Yes, the calendar dates for starting and ending Daylight Saving Time are consistent across the country. However, because Portugal spans 4 different time zones, the actual moment the clocks move occurs at different times depending on the local timezone of each district.
How will the next transition affect the day in Portugal?
Following the shift on 18 Apr 1931, you will notice that there is more light in the evening compared to the day before. While the transition may temporarily disrupt sleep patterns, the primary goal of this forward shift is to maximize usable daylight for the population.