When this problem occurs, I think there are two possibilities: 1. You and your friends do not communicate well. 2. You don’t know much about the lunar and solar calendars.

1. April 12, 2019 is on the solar calendar and the eighth day of March on the lunar calendar. April 12th is on the lunar calendar and May 16th on the solar calendar. lunar calendar.

2. The lunar calendar, also called the lunar calendar, is a calendar set based on the waxing and waning of the moon. The solar calendar, also called the solar calendar or the Gregorian calendar, is a calendar set based on the movement of the sun.