The name of an era

The name of an era
The era name is the Japanese original year name.
In recent years, it became one era name in one Emperor generation, and the name of the era name changed at the time of the Heisei Emperor abdicating.

It also changes even in the middle of the year.
It was "Heisei" until April 2019, but from May 2019 we use the year name "Reiwa ".
Most of the documents for the government and the private sectors use this era name in daily life.
So, Japanese people use both the Christian era and the Japanese era name.