Before artificial lights were
common, the moon played an important
role in everyday life. During
full moon it was light enough
for some outdoor activities, so
it would be important to keep
track of the phases of the moon.
Ancient societies often had
calendars related to the moon
One legacy of the days of lunar
calendars is the rule for
determining the date of Easter:
the first Sunday following the
first full moon following the
first day of spring. This year
Easter is a bit later than normal,
and last year it was relatively
early.
Here is a link to a table showing
how the date of Easter varies each
year from 2003 to 2032:
http://myhome.spu.edu/ddowning/PHY1135/easter.pdf
……………..
–Douglas Downing
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