Michael wrote:

So for the rest of you . . .how is it possible to see four GF's in one day
yet all different and all at different times?

There is no need to fly east ... On the West Coast you can see as many
as you like by flying on a north/south line and changing altitude
(slight climb) as the sun sets.

In more years at sea than I care to think about, I have yet to see a
green flash while onboard ship.

Rick