Ovulation Day for a 31-day Cycle When the Last Period Started on October 04, 2025
⚪ Ovulation day (highest chance for pregnant) is:
2025-10-21 (Tuesday)
📅 Fertile window: Oct 17 - Oct 22
| Fri | Sat | Sun | Mon | Tue | Wed |
| Oct 17 | Oct 18 | Oct 19 | Oct 20 | Oct 21 | Oct 22 |
| 👦 | 👦 | 👦/👧 | 👧 | 👧 | 👧 |
Pregnacy test day: Nov 05 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: Jul 11 2026 (Saturday)
If not pregnant.
🩸 Next period: Nov 04 2025
⚪ Next ovulation: Nov 20 2025
Nearest days of ovulation for a 31-day cycle
- Ovulation day for a 31-day cycle when the last period started on September 30
- Ovulation day for a 31-day cycle when the last period started on October 1
- Ovulation day for a 31-day cycle when the last period started on October 2
- Ovulation day for a 31-day cycle when the last period started on October 3
- Ovulation day for a 31-day cycle when the last period started on October 4
- Ovulation day for a 31-day cycle when the last period started on October 5
- Ovulation day for a 31-day cycle when the last period started on October 6
- Ovulation day for a 31-day cycle when the last period started on October 7
- Ovulation day for a 31-day cycle when the last period started on October 8
The closest calculation of the day of ovulation for different cycle lengths when the first day of the period was October 4, 2025
- Ovulation day for a 27-day cycle when the last period started on October 4
- Ovulation day for a 28-day cycle when the last period started on October 4
- Ovulation day for a 29-day cycle when the last period started on October 4
- Ovulation day for a 30-day cycle when the last period started on October 4
- Ovulation day for a 31-day cycle when the last period started on October 4
- Ovulation day for a 32-day cycle when the last period started on October 4
- Ovulation day for a 33-day cycle when the last period started on October 4
- Ovulation day for a 34-day cycle when the last period started on October 4
- Ovulation day for a 35-day cycle when the last period started on October 4