In, At, On + Time or Date

When is your birthday?
Mine is ON October 12.

When do you eat lunch?
I usually eat it AT noon.

When does the school year begin in your country?
In mine it begins IN September.

Do you know which preposition to use before times, days, months and years?

Here is a reminder.

in + month or year
In March, In 2003

on + date
(with the year or without it) or day of the week
On April 2, On March 3, 1999, On Saturday

at + clock time, midnight, noon
At 3:30 p.m., At 4:01, At noon

in + season
In the summer, In the winter

in + morning, afternoon, evening
In the morning, In the evening

at + night
At night