Convert Attoseconds to Synodic Months
Convert Attoseconds (as) to Synodic Months (syn.mo) instantly and accurately.
Conversion Formula
syn.mo = as × 3.919350925e-25
About Attoseconds
An attosecond (as) = 10⁻¹⁸ s - the timescale of electron dynamics in atoms. The Bohr-model orbital period in hydrogen is ~152 as. Electron tunnelling through atomic potential barriers takes a few hundred as. The 2023 Nobel Prize in Physics (Agostini, Krausz, L'Huillier) honoured methods for generating sub-100 as pulses via high-harmonic generation in Ti:sapphire lasers. 1 as = 10⁻¹⁸ s = 1,000 zs.
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
| Attoseconds (as) | Synodic Months (syn.mo) |
|---|---|
| 1 as | 3.919 × 10-25 syn.mo |
| 2 as | 7.839 × 10-25 syn.mo |
| 5 as | 1.96 × 10-24 syn.mo |
| 10 as | 3.919 × 10-24 syn.mo |
| 25 as | 9.798 × 10-24 syn.mo |
| 50 as | 1.96 × 10-23 syn.mo |
| 100 as | 3.919 × 10-23 syn.mo |