Convert Milliseconds to Synodic Months
Convert Milliseconds (ms) to Synodic Months (syn.mo) instantly and accurately.
Conversion Formula
syn.mo = ms × 3.919350925e-10
About Milliseconds
A millisecond (ms) = 10⁻³ s. Human visual reaction time 150-300 ms; auditory reaction 140-160 ms. Echo delays below ~30 ms cause Haas reinforcement; 100-500 ms are perceived as distinct echoes. One cinema frame at 24 fps = 41.7 ms; 60 fps gaming requires 16.7 ms/frame. Millisecond pulsars rotate in 1.4-30 ms. MIDI keyboard on-latency 1-3 ms. 1 ms = 10⁻³ s.
About Synodic Months
A synodic (lunar) month = new moon to new moon = 29.5306 days = 2,551,442.9 s. Longer than the sidereal month (27.32 d) because Earth advances ~27° in its orbit during that time; the Moon must travel further to realign with the Sun. Islamic Hijri, Hebrew lunisolar, and Chinese calendars are built on synodic months. Eclipses repeat via the Saros cycle (18 yr 11 d = 223 synodic months). 1 syn.mo ≈ 29.5306 d.
Quick Reference Table
| Milliseconds (ms) | Synodic Months (syn.mo) |
|---|---|
| 1 ms | 3.919 × 10-10 syn.mo |
| 2 ms | 7.839 × 10-10 syn.mo |
| 5 ms | 1.96 × 10-9 syn.mo |
| 10 ms | 3.919 × 10-9 syn.mo |
| 25 ms | 9.798 × 10-9 syn.mo |
| 50 ms | 1.96 × 10-8 syn.mo |
| 100 ms | 3.919 × 10-8 syn.mo |