Convert Anomalistic Months to Days

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

Anomalistic Months (anom.mo)
Days (d)

Conversion Formula

d = anom.mo × 27.55455104

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 Days

A day (d) = exactly 86,400 s. Earth's actual solar day varies ±16 s due to orbital eccentricity and axial tilt (equation of time). Leap seconds (abandoned in UTC after 2035) corrected the TAI-UT1 divergence. Mars's sol = 24 h 39 min 35 s ≈ 88,775 s; a Martian year = 668.6 sols. The day structures circadian biology, tides, and planetary science. 1 day = 86,400 s = 24 h.

Quick Reference Table

Anomalistic Months (anom.mo)Days (d)
1 anom.mo27.5546 d
2 anom.mo55.1091 d
5 anom.mo137.773 d
10 anom.mo275.546 d
25 anom.mo688.864 d
50 anom.mo1377.73 d
100 anom.mo2755.46 d

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