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Ovulation & Fertile Window
First day of last period
Average cycle length (days)
Most fertile, likely ovulation
Thu, Aug 6
Fertile window:
Sat, Aug 1 → Fri, Aug 7
(about 6 days).
Cycle
Fertile window
Ovulation
This cycle
Sat, Aug 1 – Fri, Aug 7
Thu, Aug 6
+1 cycle
Sat, Aug 29 – Fri, Sep 4
Thu, Sep 3
+2 cycles
Sat, Sep 26 – Fri, Oct 2
Thu, Oct 1
✨ Live · Calendar estimate (ovulation ≈ next period − 14 days). Not a contraceptive method. Cycles vary. Ovulation kits or tracking are more precise.
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