According to the US Naval Observatory, Seattle’s sunset on December 21 is scheduled for 4:20pm, with the end of civil twilight (when, according to the USNO, you can still see objects in twilight) at 4:56pm.
If you want to get out and see the sunset with the planetarium specialist at Pacific Science Center, join Alice Enevoldsen at Solstice Park in West Seattle starting at 3:30pm on Wednesday, December 21. See if the sunset lines up with the placed marker (it did for summer, but will it for winter?). Alice will be there even if it is cloudy because sometimes the Sun peeks through just as it begins to set, but if it is driving rain or sleet, Alice says she’ll be home with some hot tea!
If you’d like to check out Northwest astronomy information, check Alic Enevoldsen’s website at http://www.alicesastroinfo.com.
Solstice Park is located at:
7400 Fauntleroy Way SW
Seattle, WA 98136
When you arrive at the park, walk past the tennis courts, through the P-Patch and continue on up the hill. When the trail ends go five more feet to enter the stonework circle and get the best views of sunset.