Four types of Green Flash and can, theoretically, be seen at different times
of the same day as in same daylight hours. Flying North/South is agood one
but doesn't win any points because you are seeing the same type of GF over
and over and over again . . .my friend . . . . A tribute to one of the Doors
few lines of poetry that weren't truly boringly insipid.

Here's the next hint. Two of them are are almost exactly 12 hours apart
from the other two.

Here's a bigger hint. Two of them are at a different altitude from the
other two.

And for Katy . ...never look directly into the sun. Wait until 'most' of
the orb is below the horizon and only the top ...10% or so remains . ..then
look. The horizon must be clear of haze, sandstorms, clouds,fogbankswhat
have you AND if you use binoculars which will under those viewing
conditions net you a look each and every time . . .DON't look until most of
the sun isbelow the horizon. Otherwise, as Katy properly warns, " Visual
Purple burn in my head. . . . .(a tribute to Jimi and the Optometrists.) . .
... "

M.