Endringer for sommertid i 2021
- Albania
- Andorra
- Australia
- Bahamas
- Belgia
- Bermuda
- Bosnia-Hercegovina
- Bulgaria
- Canada
- Chile
- Cuba
- Danmark
- Det palestinske området
- Estland
- Fiji
- Finland
- Frankrike
- Færøyene
- Gibraltar
- Grønland
- Haiti
- Hellas
- Iran
- Irland
- Israel
- Italia
- Jersey
- Jordan
- Kosovo
- Kroatia
- Kypros
- Latvia
- Libanon
- Liechtenstein
- Litauen
- Luxemburg
- Malta
- Man
- Marokko
- Mexico
- Monaco
- Montenegro
- Nederland
- New Zealand
- Nord-Makedonia
- Norfolkøya
- Norge
- Paraguay
- Polen
- Portugal
- Romania
- Saint-Pierre-et-Miquelon
- Samoa
- Serbia
- Slovakia
- Slovenia
- Spania
| Land | Neste endring av sommertid | Retning |
|---|---|---|
| Albania | 2021-03-28 | frem |
| Andorra | 2021-03-28 | frem |
| Australia | 2021-04-03 | tilbake |
| Bahamas | 2021-03-14 | frem |
| Belgia | 2021-03-28 | frem |
| Bermuda | 2021-03-14 | frem |
| Bosnia-Hercegovina | 2021-03-28 | frem |
| Bulgaria | 2021-03-28 | frem |
| Canada | 2021-03-14 | frem |
| Chile | 2021-04-04 | tilbake |
| Cuba | 2021-03-14 | frem |
| Danmark | 2021-03-28 | frem |
| Det palestinske området | 2021-03-26 | frem |
| Estland | 2021-03-28 | frem |
| Fiji | 2021-01-16 | tilbake |
| Finland | 2021-03-28 | frem |
| Frankrike | 2021-03-28 | frem |
| Færøyene | 2021-03-28 | frem |
| Gibraltar | 2021-03-28 | frem |
| Grønland | 2021-03-28 | frem |
| Haiti | 2021-03-14 | frem |
| Hellas | 2021-03-28 | frem |
| Iran | 2021-03-21 | frem |
| Irland | 2021-03-28 | frem |
| Israel | 2021-03-26 | frem |
| Italia | 2021-03-28 | frem |
| Jersey | 2021-03-28 | frem |
| Jordan | 2021-03-25 | frem |
| Kosovo | 2021-03-28 | frem |
| Kroatia | 2021-03-28 | frem |
| Kypros | 2021-03-28 | frem |
| Latvia | 2021-03-28 | frem |
| Libanon | 2021-03-27 | frem |
| Liechtenstein | 2021-03-28 | frem |
| Litauen | 2021-03-28 | frem |
| Luxemburg | 2021-03-28 | frem |
| Malta | 2021-03-28 | frem |
| Man | 2021-03-28 | frem |
| Marokko | 2021-04-11 | tilbake |
| Mexico | 2021-04-04 | frem |
| Monaco | 2021-03-28 | frem |
| Montenegro | 2021-03-28 | frem |
| Nederland | 2021-03-28 | frem |
| New Zealand | 2021-04-03 | tilbake |
| Nord-Makedonia | 2021-03-28 | frem |
| Norfolkøya | 2021-04-03 | tilbake |
| Norge | 2021-03-28 | frem |
| Paraguay | 2021-03-28 | tilbake |
| Polen | 2021-03-28 | frem |
| Portugal | 2021-03-28 | frem |
| Romania | 2021-03-28 | frem |
| Saint-Pierre-et-Miquelon | 2021-03-14 | frem |
| Samoa | 2021-04-03 | tilbake |
| Serbia | 2021-03-28 | frem |
| Slovakia | 2021-03-28 | frem |
| Slovenia | 2021-03-28 | frem |
| Spania | 2021-03-28 | frem |