Ovulation Day for a 31-day Cycle When the Last Period Started on December 27, 2025
⚪ Ovulation day (highest chance for pregnant) is:
2026-01-13 (Tuesday)
📅 Fertile window: Jan 09 - Jan 14
| Fri | Sat | Sun | Mon | Tue | Wed |
| Jan 09 | Jan 10 | Jan 11 | Jan 12 | Jan 13 | Jan 14 |
| 👦 | 👦 | 👦/👧 | 👧 | 👧 | 👧 |
Pregnacy test day: Jan 28 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: Oct 03 2026 (Saturday)
If not pregnant.
🩸 Next period: Jan 27 2026
⚪ Next ovulation: Feb 13 2026
Nearest days of ovulation for a 31-day cycle
- Ovulation day for a 31-day cycle when the last period started on December 23
- Ovulation day for a 31-day cycle when the last period started on December 24
- Ovulation day for a 31-day cycle when the last period started on December 25
- Ovulation day for a 31-day cycle when the last period started on December 26
- Ovulation day for a 31-day cycle when the last period started on December 27
- Ovulation day for a 31-day cycle when the last period started on December 28
- Ovulation day for a 31-day cycle when the last period started on December 29
- Ovulation day for a 31-day cycle when the last period started on December 30
- Ovulation day for a 31-day cycle when the last period started on December 31
The closest calculation of the day of ovulation for different cycle lengths when the first day of the period was December 27, 2025
- Ovulation day for a 27-day cycle when the last period started on December 27
- Ovulation day for a 28-day cycle when the last period started on December 27
- Ovulation day for a 29-day cycle when the last period started on December 27
- Ovulation day for a 30-day cycle when the last period started on December 27
- Ovulation day for a 31-day cycle when the last period started on December 27
- Ovulation day for a 32-day cycle when the last period started on December 27
- Ovulation day for a 33-day cycle when the last period started on December 27
- Ovulation day for a 34-day cycle when the last period started on December 27
- Ovulation day for a 35-day cycle when the last period started on December 27