The sun set quite suddenly at 8:24 PM yesterday. The light faded, instantly; I looked at the clock. "The days are getting shorter," I said to my friend.
Daylight is already about two hours shorter than it was at the solstice. Now it's changing very fast, and will be two hours shorter still by the equinox. As of this moment, it can't be ignored. There will be darkness.
Sun and Moon Data for One Day
The following information is provided for Port Angeles, Clallam County, Washington (longitude W123.4, latitude N48.1):
17 August 2011 Pacific Daylight Time
Begin civil twilight 5:37 a.m.
Sunrise 6:11 a.m.
Sun transit 1:18 p.m.
Sunset 8:24 p.m.
End civil twilight 8:58 p.m.