Monday，2025.02.10

New words：

calendar [ˈkæləndər] n. 日历；历法；日程表；挂历
solar calendar 阳历
lunar calendar 阴历

Sample Sentences：

Today is her birthday according to the solar calendar.

I have marked down the date of the party on my calendar.

The fifteenth of each month in the lunar calendar is the day of the full moon.

The Lantern Festival falls on the 15th of the first month of the lunar calendar.