Ovulation Day for a 40-day Cycle When the Last Period Started on December 21, 2024
⚪ Ovulation day (highest chance for pregnant) is:
2025-01-16 (Thursday)
📅 Fertile window: Jan 12 - Jan 17
| Sun | Mon | Tue | Wed | Thu | Fri |
| Jan 12 | Jan 13 | Jan 14 | Jan 15 | Jan 16 | Jan 17 |
| 👦 | 👦 | 👦/👧 | 👧 | 👧 | 👧 |
Pregnacy test day: Jan 31 2025
💡 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 27 2025 (Saturday)
If not pregnant.
🩸 Next period: Jan 30 2025
⚪ Next ovulation: Feb 25 2025
Nearest days of ovulation for a 40-day cycle
- Ovulation day for a 40-day cycle when the last period started on December 17
- Ovulation day for a 40-day cycle when the last period started on December 18
- Ovulation day for a 40-day cycle when the last period started on December 19
- Ovulation day for a 40-day cycle when the last period started on December 20
- Ovulation day for a 40-day cycle when the last period started on December 21
- Ovulation day for a 40-day cycle when the last period started on December 22
- Ovulation day for a 40-day cycle when the last period started on December 23
- Ovulation day for a 40-day cycle when the last period started on December 24
- Ovulation day for a 40-day cycle when the last period started on December 25
The closest calculation of the day of ovulation for different cycle lengths when the first day of the period was December 21, 2024
- Ovulation day for a 36-day cycle when the last period started on December 21
- Ovulation day for a 37-day cycle when the last period started on December 21
- Ovulation day for a 38-day cycle when the last period started on December 21
- Ovulation day for a 39-day cycle when the last period started on December 21
- Ovulation day for a 40-day cycle when the last period started on December 21
- Ovulation day for a 41-day cycle when the last period started on December 21
- Ovulation day for a 42-day cycle when the last period started on December 21
- Ovulation day for a 43-day cycle when the last period started on December 21
- Ovulation day for a 44-day cycle when the last period started on December 21