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Daylight Saving Time–Second Half of 2021

Daylight Saving Time (DST) is often incorrectly referred to as “daylight savings time”. In some countries, it is also called “summer time”. When DST is not observed, it is called standard time, normal time or winter time.

This list displays a brief (but not complete) overview showing the countries and territories which observed DST during the second half of 2021.

Current country/territory names, rather than historic country names are displayed, so the list could contain countries that did not exist at the time.

Also, please see the page for the first half of 2021 or the overview over start and end times for 2021 sorted by country.

Date Country Local Time Change
Sep 4 Sat 10:00 pm → 11:00 pm (Forward)
Sep 5 Sun
  • Chile (Most locations observing DST)
12:00 am → 1:00 am (Forward)
Sep 22 Wed
  • Iran (All locations)
12:00 am → 11:00 pm (Back)
Sep 26 Sun 2:00 am → 3:00 am (Forward)
Sep 26 Sun 2:45 am → 3:45 am (Forward)
Oct 3 Sun 12:00 am → 1:00 am (Forward)
Oct 3 Sun 2:00 am → 2:30 am (Forward)
Oct 3 Sun 2:00 am → 3:00 am (Forward)
Oct 29 Fri 12:00 am → 11:00 pm (Back)
Oct 29 Fri 1:00 am → 12:00 am (Back)
Oct 30 Sat 11:00 pm → 10:00 pm (Back)
Oct 31 Sun 12:00 am → 11:00 pm (Back)
Oct 31 Sun 1:00 am → 12:00 am (Back)
Oct 31 Sun 2:00 am → 1:00 am (Back)
Oct 31 Sun 3:00 am → 1:00 am (Back)
Oct 31 Sun 3:00 am → 2:00 am (Back)
Oct 31 Sun 4:00 am → 3:00 am (Back)
Nov 7 Sun
  • Cuba (All locations)
1:00 am → 12:00 am (Back)
Nov 7 Sun 2:00 am → 1:00 am (Back)
Daylight Saving Time for other years
Yearly Overview January–June July–December
2019 first half of 2019 second half of 2019
2020 first half of 2020 second half of 2020
2021 first half of 2021 second half of 2021
2022 first half of 2022 second half of 2022
2023 first half of 2023 second half of 2023

Other years