On what day is a client, with a regular 30-day menstrual cycle starting January 1, most likely to ovulate?

Ovulation typically occurs around the midpoint of a regular menstrual cycle. In a standard 30-day cycle, ovulation usually happens approximately 14 days before the start of the next menstrual period. Therefore, if the cycle begins on January 1, the next cycle would start on January 31. Counting 14 days back from that date, the most likely day of ovulation would be around January 16.

This timing is based on the average luteal phase length, which is generally consistent at about 14 days for most individuals. As a result, the 16th day of the cycle aligns with the expected ovulation timing, making it the most likely day for a client with a regular 30-day menstrual cycle to ovulate.