I have seen it: 4x in Hawaii in 6 years, 1x S. California, 1x over Lake Michigan: It has to be clear to the horizon, and only after rain has cleared the atmosphere. It lasts long enough to be certain- if you do NOT look at it until the critical last 3 secondsgreen-flash time as brightness declines.
Dacarls:
A-class USA 196, USA 21, H18, H16
"Nothing that's any good works by itself. You got to make the damn thing work"- Thomas Edison
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