Blog Description - A collection of media articles and tweets highlighting 1) the dangers of sun glare while driving, 2) the issue of shadowing due to urban development, and 3) random fun sun facts.

Blog Purpose and Disclaimer - This blog compiles and shares public interest stories in an effort to educate and raise awareness. Sources, credits and links are provided for articles and images, and it is my belief that this blog complies with the fair dealing exception in Canada's Copyright Act. However, if you wish your item removed, simply ask.

Cheers, Ralph Bouwmeester

Saturday, March 1, 2025

How much more daylight can you expect in March?

If you live in southern Ontario, the number of daylight hours will increase in March by about an hour and a half. Great news for those tired of the long winter we've had. Further north, the increase will be even greater. To the south, however, the increase becomes less - to essentially zero at the Equator where day and night are each 12 hours long all year.

 


To give you an idea of how the increase in daylight hours in March varies with latitude, the following is a summary in 5° latitude intervals. The cities listed serve as an approximate guide.  

  • 60°N - 2h 44m      - Seward AK, north limit of BC, AB, SK and MB, mid-Hudson Bay
  • 55°N - 2h 15m      - Ketchikan AK, north end of James Bay, Schefferville QC
  • 50°N - 1h 52m      - Kelowna BC, Medicine Hat AB, Winnipeg MB, Sept-Iles QC
  • 45°N - 1h 34m      - Yellowstone Park WY, Minneapolis MN, Bracebridge ON, Bangor ME
  • 40°N - 1h 19m      - Boulder CO, Columbus OH, Philadelphia PA
  • 35°N - 1h 06m      - Edwards AFB CA, Albuquerque NM, Memphis TN, Charlotte NC
  • 30°N - 0h 54m      - Houston TX, New Orleans LA, Jacksonville FL
  • 25°N - 0h 44m      - Key Largo FL

It does not matter where you are east-west; longitude is not a factor. Enjoy

Cheers, Ralph