Convert Months to Draconic Months
Convert Months (mo) to Draconic Months (drac.mo) instantly and accurately.
Conversion Formula
drac.mo = mo × 1.118500255
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.
About Draconic Months
The draconic (nodical) month = 27.2122 days = 2,351,135.8 s - the interval between successive Moon passages through the same orbital node. Named from the Latin 'draco' (dragon): eclipses only occur near the nodes, where the Moon can align with the Sun or Earth's shadow. The Saros cycle (18 yr 11 d) equals ~242 draconic months, enabling eclipse sequence forecasting. 1 drac.mo = 27.2122 d.
Quick Reference Table
| Months (mo) | Draconic Months (drac.mo) |
|---|---|
| 1 mo | 1.1185 drac.mo |
| 2 mo | 2.237 drac.mo |
| 5 mo | 5.5925 drac.mo |
| 10 mo | 11.185 drac.mo |
| 25 mo | 27.9625 drac.mo |
| 50 mo | 55.925 drac.mo |
| 100 mo | 111.85 drac.mo |