3. When do the seasons start?

 

There are four astronomical seasons on Earth, defined by the movement of the sun in the sky. For the northern hemisphere:

  • Spring starts at the moment when the sun is directly over the equator, going from south to north: the "vernal equinox"'.
  • Summer starts at the moment when the sun is farthest north: the "summer solstice".
  • Fall starts at the moment when the sun is directly over the equator, going from north to south: the "autumnal equinox".
  • Winter starts at the moment when the sun is farthest south: the "winter solstice".

Contact us

Dr. David Bohlender
Herzberg Astronomy and Astrophysics Research Centre
Telephone: 250-363-0025
Fax: 250-363-0045
Email:
David.Bohlender@nrc-cnrc.gc.ca

 

The times in this table are Coordinated Universal Time (UTC)

Year Spring Summer Autumn Winter
2011 March 20 23:21 June 21 17:16 September 23 09:04 December 22 05:30
2012 March 20 05:14 June 20 23:09 September 22 14:49 December 21 11:11
2013 March 20 11:02 June 21 05:04 September 22 20:44 December 21 17:11
2014 March 20 16:57 June 21 10:51 September 23 02:29 December 21 23:02
2015 March 20 22:45 June 21 16:38 September 23 08:20 December 22 04:48
2016 March 20 04:30 June 20 22:34 September 22 14:21 December 21 10:44
2017 March 20 10:28 June 21 04:24 September 22 22:02 December 21 16:28
2018 March 20 16:15 June 21 10:07 September 23 01:54 December 21 22:22
2019 March 20 21:58 June 21 15:54 September 23 07:50 December 22 04:14
2020 March 20 03:49 June 20 21:43 September 22 13:30 December 21 10:02
2021 March 20 09:37 June 21 03:32 September 22 19:21 December 21 15:59
2022 March 20 15:33 June 21 09:13 September 23 01:03 December 21 21:48
2023 March 20 21:24 June 21 14:57 September 23 06:50 December 22 03:27
2024 March 20 03:06 June 20 20:50 September 22 12:43 December 21 09:20
2025 March 20 09:01 June 21 02:42 September 22 18:19 December 21 15:03
2026 March 20 14:45 June 21 08:24 September 23 00:05 December 21 20:50
2027 March 20 20:24 June 21 14:10 September 23 06:01 December 22 02:42
2028 March 20 02:17 June 20 20:01 September 22 11:45 December 21 08:19
2029 March 20 08:02 June 21 01:48 September 22 17:38 December 21 14:14
2030 March 20 13:51 June 21 07:31 September 22 23:26 December 21 20:09

For Canadian time, subtract the following hours from UTC

  Pacific Mountain Central Eastern Atlantic Newfoundland
Standard 8 7 6 5 4 3.5
Daylight 7 6 5 4 3 2.5