The green flash only lasts a few seconds in central
latitudes. However in the
polar regions where the sun slowly changes in
elevation, it can last much longer. Members of a polar expedition in
Antartica reported seeing the green flash for 35 minutes in
September as the
sun slowly rose above the horizon, signifying the beginning of summer.
On a side note, there is an old
Scottish legend that says if you see the green flash, you will not
err in the matters of
love.