On Sunday, March 20, 2016 at 8:00:43 PM UTC, Mike Collins wrote:
oriel36 wrote:
On Saturday, March 19, 2016 at 7:13:27 PM UTC, SlurpieMcDoublegulp wrote:
Hi all,
Happy Springtime!

http://antarcticsun.usap.gov/aroundT...unset_2010.jpg

Sunset at the South pole with the event due to a separate rotation to
your picture of daily sunset and its daily rotational cause.

You can't help yourself by inserting the 'vernal' description used by
celestial sphere enthusiasts thereby you are unable to appreciate the
Earth's two distinct day/night cycles with two types of sunsets happening tomorrow.

Don't make silly mistakes! His photograph was taken in the northern
hemisphere so it's the vernal equinox.

The Northern hemisphere has two distinct sunrises today while the Southern hemisphere has two distinct sunsets due to two separate rotations to the central Sun going on simultaneously.This and this alone defines the Equinoxes.

Celestial sphere enthusiasts and their magnification exercise wouldn't get something so beautiful as dual sunrises and sunsets in a single day let alone the causes of polar dawn and twilight.

So, two sunrises in the Northern hemisphere balanced with two sunsets in the Southern hemisphere and that is the Equinox, something which has been going on throughout life on the planet.