Ovulation is a beautiful period of time in a woman's menstrual cycle, usually 14 days between periods. During this time, a woman's egg is released and can combine with sperm to form a fertilized egg, thereby achieving pregnancy.

First, we need to understand a woman’s menstrual cycle. Typically, a woman's menstrual cycle lasts 28 days, but some may have it longer or shorter. During a cycle, a woman releases one egg and then waits 7-10 days for another egg to be released.

So, how to calculate ovulation?

The calculation method is as follows:

1. Record basal body temperature: When women wake up every morning, measure their oral or anal body temperature. Record the basal body temperature in a table and plot it on a graph.

2. Observe body temperature changes: During ovulation, a woman’s basal body temperature will increase by 0.3-0.5 degrees Celsius.

3. Observe symptoms: During ovulation, women may feel some fatigue, breast swelling, and mood swings.

Therefore, through the above method, we can calculate the ovulation period of women.