Convert Anomalistic Months to Months

Convert Anomalistic Months (anom.mo) to Months (mo) instantly and accurately.

Anomalistic Months (anom.mo)
Months (mo)

Conversion Formula

mo = anom.mo × 0.9053015805

About Anomalistic Months

The anomalistic month = interval between successive Moon perigees = 27.5546 days = 2,380,713.2 s. Slightly longer than the sidereal month because the Moon's perigee precesses, completing one revolution in ~8.85 years. Governs 'supermoons': a full moon at perigee appears ~14% wider and 30% brighter. Tidal forces at perigee are ~30% stronger than at apogee. 1 anom.mo = 27.5546 d.

About Months

A mean Gregorian calendar month = 365.2425 ÷ 12 = 30.436875 days = 2,629,746 s exactly (averaged over the 400-year cycle with exactly 97 leap years). Individual months have 28-31 days. Loan schedules, subscriptions, and mobile billing reference 'per month', requiring explicit agreement on meaning. ISO 8601 uses 'P1M'. 1 mo = 30.436875 d = 2,629,746 s.

Quick Reference Table

Anomalistic Months (anom.mo)Months (mo)
1 anom.mo0.905302 mo
2 anom.mo1.8106 mo
5 anom.mo4.52651 mo
10 anom.mo9.05302 mo
25 anom.mo22.6325 mo
50 anom.mo45.2651 mo
100 anom.mo90.5302 mo

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