To me, engagement dont have a specific day, moth or year to happend. But the best time to have an engagement is when your heart is ready, when your heart says "yes". And you will find out when that time is.
december
There is no particular month, but summer time is most popular.
The month that has the most popular birthdays is october and August.
20 years of age
August
March
APRIL!
Usually the most popular is the pet of the month, it is cheaper, and you get extra items for it.
April and December are usually the most popular, at least when visiting Mexico.
January.
August
December
Febuary?