ovulation day
Refers to the day of ovulation, often used in contexts of fertility, pregnancy planning, or contraception. Compare with 危険日 (dangerous day) for the fertile window.
See also: 危険日
I use an app to predict my ovulation day.
Ovulation day is a day when you are likely to conceive.
Compound of 排卵 (ovulation) and 日 (day). 排卵 is from 排 (discharge) and 卵 (egg).