I need pictures of the Sun or Moon rising or setting over a true
horizon (no mountains) from a known location (I need latitude,
longitude and elevation above sea level) with an accurate timestamp
(to within a few seconds).

Sun/Moon rise or set means either the start or end of sun rise or
set. More specifically:

- The Sun or Moon has just started to rise and the top limb of the
Sun is barely visible over the horizon.

- The Sun or Moon has finished rising and the bottom limb is grazing
the horizon.

- The Sun or Moon has just started to set and the bottom limb is
grazing the horizon.

- The Sun or Moon has just finished setting and the top limb is just
disappearing over the horizon.

Please do not send pictures where the Sun or Moon is in the middle of
setting or rising.

If you know a source of such images, that would be fantastic as well.

I am testing the accuracy of sun/moon rise/set times as given by NASA.

More info: https://astronomy.stackexchange.com/questions/6542/