Is my birthday lunar or solar calendar?

Which calendar is yours

A birth certificate or passport usually gives a solar date. Some families, especially in Korea and China, mark birthdays by the lunar calendar instead, so the date they celebrate can fall on a different solar day. If you are unsure, check the date on your birth records first.

How saju uses the date

Saju is calculated from the solar date. The month pillar changes at solar terms, not at the start of a lunar month, so lunar day 1 does not by itself start a new month pillar.

Crossfate accepts a lunar birthday. Choose lunar on the input screen and it converts the date to solar before calculating. If you were born in a leap month, mark it. Without the mark the date is read as the ordinary month with the same number, which lands about a month away.

A solar birthday can be entered as it is. Once the date is right, the choice of calendar does not change the result.