The last time the sun set at 4:47 was December 1, which was the 335th day of the year in a non-leap year, like 1998
On December 2, 1998, the sun set at 4:46. It set at 4:46 through December 11. Finally, on December 12, it set at 4:47 again.
1998 wasn't a leap year. To adjust, we shift things up a day. Thus the last time the sun set at 4:47 in 2020 was November 30, which was the 335th day of the year in a leap year. So I guess our next 4:47 sunset this year will be on December 11.
I think I did that right. At any rate, depending on whether it's a leap year, you have ten days centered around the 6th or the 7th where the sun sets at 4:46 in DC.
I miss Bob Ryan. I bought his almanac every year. 99 cents at the Giant, and all proceeds went to a lot of good things.
Source: http://capitalclimate.blogspot.com/2010/02/bob-ryan-leaving-wrc-channel-4.html
It's cleared up, so you should have a good view of the space station tonight.
For Pax River:
https://spotthestation.nasa.gov/sightings/view.cfm?country=United_States®ion=Maryland&city=Patuxent_River_NAS#.X86Osmg3k2w
Oh, yeah. 5:46 tonight, and 5:48 on Wednesday.
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