I was just thinking, "What's an odd subject I haven't written about?"
Then it came to me: Even numbers, like 12/2/2010, 4/6/1830, decades, centuries, millenniums, our street address, number of grandchildren, my birth date and birth year.
[Definition, thanks to:] en.wikipedia.org/wiki/Even_numbers
In mathematics, the parity of an object states whether it is even or odd.
... divisible by 2 and always end with a digit of 0, 2, 4, 6, or 8
parity [noun]
2. (mathematics) a relation between a pair of integers: if both integers are odd or both are even they have the same parity; if one is odd and the other is even they have different parity; "parity is often used to check the integrity of transmitted data" -- whitesmoke.com
Historical Events on 2nd [of] December
1804 - Napoleon Bonaparte crowned emperor of France in Paris by Pope ...
-- historyorb.com/events/december/2
2006 Cuba: Fidel Castro’s eightieth [80] birthday. Raúl Castro attends ...
-- thepeoplehistory.com/december2nd.html#2006
[Googled:] world events in year 1202 [like 12/2]
What I found reminded me of a 2010 movie with one of my favorite actors; but the story and script were disappointing. Also, it would have helped to know more of the history before watching.
French King Philip II joined Richard I on the Third Crusade [1189 to 1192].
Richard was freed in 1194 [in Austria] and ... went to war with the French.
His brother John signed a treaty with Philip (1200).
Apr 28th [4/28/1202] - King Philip II throws out John … from France.
Philip conquered Normandy (1204).
John … was defeated by Philip at the Battle of Bouvines (1214).
-- answers.com/topic/philip-ii-of-france
Britannica Concise Encyclopedia: Philip II
There you have it – math and history lessons rolled into one odd post (#17), published at an odd time.