PSALM 104 Signs and Seasons

Psalm 104:19 invites the reader, the singer,
and the one meditating on Psalm 104:19
to reflect on the wonders of creation.

Psalm 104:19  ESV  He made the moon to mark the seasons
                         The sun knows its time for setting.

Genesis 1:14 ESV
And God said let there be lights in the expanse of the 
heavens to separate the day from the night.
And let them be signs and for seasons and 
for days and for years.

We still use the moon to calculate liturgical seasons.
Easter Sunday is the first Sunday
after the 1st full moon after  the 21st of March.
The stars may still be used for navigation.

The fine balance of life on earth is maintained
by various forms of energy emitted by the sun;-
Gamma rays, x-rays,  infra red, and ultra violet
which promotes vitamin D in human skin.
The Moon causes the ocean tides.
Light and warmth are the most obvious benefits
of the Sun, Moon and Stars, but that is the start
of a long list.