Squirrely Jo wrote to Joe:

You are welcome.

I forgot to mention that the earliest calendars consisted of 10 months.
After June came September, from septem for seven.
Next was October, from octo meaning eight.
Then there was November, from novem which is nine (a novena is 9 days).
The calendar ended with December, deca meaning ten.

But the 2 Caesars wanted to live in eternity. July was added to the
calendar for Julius and August for Augustus.  Now the calendar had
12 months, and months 7 thru 10 became 9 thru 12.

The Julian calendar, created by Julius Caesar in 46 B.C., measured time
until 1582.  He was advised by a Greek, Sosigenes, that a year was 365
and 1/4 days.  Thus the Julian calendar gave every 4th year 366 days.

But 365 and 1/4 days introduced an error of 11 minutes and 14 seconds,
or 1 day in 128 years or 3 days every 400 years.  By 1582, the error
amounted to 10 days.  The Gregorian calendar, named for Pope Gregory
XIII, introduced in 1582, made centesimal years ending in 00 common
years and centesimal years divisible by 400 leap years.  Under the plan
1600 and 2000 were leap years; 1700, 1800 and 1900 were not leap years.
To correct for the 10-day error that occurred during the Julius calendar,
October 4, 1582 was followed by October 15, 1582.

Are you totally confused now?  <G>

... Warning:  Dates on calendar are closer than they appear.    
___ Blue Wave/QWK v2.12