According to Kerhart, each new cycle begins at the beginning of the new year on January 1 and ends on December 31. Here’s how to determine yours.

Starting with the date of birth (month and day only), truncate them to two single digits by adding the digits together. For example, a birthday on December 14th would be 12 (month) and 14 (day). 12 reduces to 3 because 1 + 2 = 3, and 14 reduces to 5 because 1 + 4 = 5.

From there, determine the current universal year, which is found by adding the digits of the year to a single digit. For example, 2023 is a universal 7 year because 2 + 2 + 0 + 3 = 7.

Then add your three one-digit numbers (in the case of a December 14th birthday, it would be 3 + 5 + 7, which equals 15. Hence, 1 + 5 = 6, so this birthday would be the 6th personal year in 2023).