October 9 is:

World Post Day 

Curious Events Day

Beer and Pizza Day

Moldy Cheese Day

Fire Prevention Day

Independence Day in Guayaquil, Ecuador

Independence Day in Uganda

Hangul (Alphabet) Day in Korea

Nautilus Night

John Lennon's birthday

Leif Ericson Day

Confucius's birthday

Click on the date to find what special day it is:

October
7	6	5	4	3	2	1
14	13	12	11	10	9	8
21	20	19	18	17	16	15
28	27	26	25	24	23	22
				31	30	29
See also: Special days on different dates