Vietnamese era name

In Vietnam, there is a special way of naming the years called the "era name." This means that every year has a special name instead of just being called by its number.

The era names are made up of two parts - the heavenly stem and the earthly branch. The heavenly stem is kind of like a letter or number, and the earthly branch is like a symbol or picture.

There are 10 heavenly stems and 12 earthly branches, so this creates a total of 60 possible era names. This is because each year is named after the combination of the heavenly stem and earthly branch, and there are 60 combinations possible (10 times 12 equals 60!).

The era name is important because it helps people remember what year it is, and it is also used in important documents and calendars. Each era name also has a special meaning, based on the beliefs and traditions of Vietnamese culture.