Project 366 – Post No. 258 – Sunset turning point

What is Project 366? Read more here.

Today is a special day here in Edmonton. Today is the earliest time the sun will set for the year. Yesterday the sunset was at 16:14, today it is at 16:13 and…., tomorrow it is at 16:14 again. After that the sunset times will just keep on getting later until Summer Solstice. The morning sunrises are, however, still getting later so the days are still getting shorter. To be more precise, we will still loose 4 minutes and 10 seconds of day time hours (from 7:32:52 hours of day length today to 7:27:42 hours of day length on December 21). All of this will start to improve, however, after the Winter Solstice, which this year falls on December 21 at 21:19. Already on December 22 we would have gained a fraction of a second of day length. The puzzling fact that the years’s earliest sunset (and the latest sunrise) does not fall on Winter Solstice has to do with the elliptical orbit and axial tilt of our planet.

May the curiosity be with you. This is from “The Birds are Calling” blog (www.thebirdsarecalling.com). Copyright Mario Pineda.