I read his short biography and understood how excellent a person he is.

He is studying about past presidents.

When I looked into his history, some very interesting facts came to light.

What is today's date in the lunar calendar?

My brother is good at playing the electric bass.

We calculate time using the solar calendar.

He is receiving treatment for scrofula.

He learned about the elekiter in history class.

We celebrate the New Year according to the old calendar.

We track the date using the Gregorian calendar.