Convert Seconds to Draconic Months
Convert Seconds (s) to Draconic Months (drac.mo) instantly and accurately.
Conversion Formula
drac.mo = s × 4.253263451e-7
About Seconds
The second (s) is the SI base unit of time, defined since 1967 as exactly 9,192,631,770 periods of the caesium-133 ground-state hyperfine transition at 0 K. Caesium fountain clocks realise this to ~10⁻¹⁶ (1 s lost per ~300 million years); optical lattice clocks (Sr, Yb) reach ~10⁻¹⁸. The second links to the metre via the defined speed of light c = 299,792,458 m/s exactly. 1 s = 1,000 ms = 1/60 min.
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
| Seconds (s) | Draconic Months (drac.mo) |
|---|---|
| 1 s | 4.253 × 10-7 drac.mo |
| 2 s | 8.507 × 10-7 drac.mo |
| 5 s | 2.127 × 10-6 drac.mo |
| 10 s | 4.253 × 10-6 drac.mo |
| 25 s | 1.063 × 10-5 drac.mo |
| 50 s | 2.127 × 10-5 drac.mo |
| 100 s | 4.253 × 10-5 drac.mo |