Convert Sidereal Months to Olympiads
Convert Sidereal Months (sid.mo) to Olympiads (Ol) instantly and accurately.
Conversion Formula
Ol = sid.mo × 0.01870104225
About Sidereal Months
The sidereal month = Moon's orbital period relative to the fixed stars = 27.3217 days = 2,360,591.6 s - the shortest lunar month. It is ~2.21 days shorter than the synodic month (29.53 d) because Earth advances ~27° along its orbit in the same period; the Moon must travel further to re-align with the Sun. Used in GPS orbit design, tidal modelling, and lunar laser ranging. 1 sid.mo = 27.3217 d.
About Olympiads
An Olympiad = exactly 4 Gregorian years = 1,461 days = 126,227,808 s. In ancient Greece it was the standard historical dating system counting from the first Olympic Games at Olympia in 776 BCE; adopted by Hellenistic historians (Polybius, Timaeus). Modern Olympiads are numbered from Athens 1896. The 4-year cycle is mirrored in US presidential elections and EU Parliamentary terms. 1 Ol = 4 yr = 126,227,808 s.
Quick Reference Table
| Sidereal Months (sid.mo) | Olympiads (Ol) |
|---|---|
| 1 sid.mo | 0.018701 Ol |
| 2 sid.mo | 0.0374021 Ol |
| 5 sid.mo | 0.0935052 Ol |
| 10 sid.mo | 0.18701 Ol |
| 25 sid.mo | 0.467526 Ol |
| 50 sid.mo | 0.935052 Ol |
| 100 sid.mo | 1.8701 Ol |