Ovulation Day for a 42-day Cycle When the Last Period Started on December 23, 2025

⚪ Ovulation day (highest chance for pregnant) is:

2026-01-20 (Tuesday)

📅 Fertile window: Jan 16 - Jan 21

Fri Sat Sun Mon Tue Wed
Jan 16 Jan 17 Jan 18 Jan 19 Jan 20 Jan 21
👦 👦 👦/👧 👧 👧 👧

Pregnacy test day: Feb 04 2026
💡 According to recent studies, the chance of conception during ovulation is about 25%. Therefore, do not worry when the test comes out negative. Another chance is just a month of waiting.

If pregnant:
🤱 Due date: Sep 29 2026 (Tuesday)

If not pregnant.
🩸 Next period: Feb 03 2026
⚪ Next ovulation: Mar 03 2026

Nearest days of ovulation for a 42-day cycle

The closest calculation of the day of ovulation for different cycle lengths when the first day of the period was December 23, 2025