Convert Shakes to Days
Convert Shakes (sh) to Days (d) instantly and accurately.
Conversion Formula
d = sh × 1.157407407e-13
About Shakes
A shake = exactly 10 ns (10⁻⁸ s) - the informal unit for fission prompt-neutron generation time, coined at Los Alamos during the Manhattan Project (1943-1945). A prompt-neutron generation in a supercritical core takes ~1-10 shakes; a full explosive chain reaction unfolds over ~50-100 shakes. The name alludes to 'two shakes of a lamb's tail'. Still used in reactor physics and weapons-design calculations. 1 shake = 10 ns.
About Days
A day (d) = exactly 86,400 s. Earth's actual solar day varies ±16 s due to orbital eccentricity and axial tilt (equation of time). Leap seconds (abandoned in UTC after 2035) corrected the TAI-UT1 divergence. Mars's sol = 24 h 39 min 35 s ≈ 88,775 s; a Martian year = 668.6 sols. The day structures circadian biology, tides, and planetary science. 1 day = 86,400 s = 24 h.
Quick Reference Table
| Shakes (sh) | Days (d) |
|---|---|
| 1 sh | 1.157 × 10-13 d |
| 2 sh | 2.315 × 10-13 d |
| 5 sh | 5.787 × 10-13 d |
| 10 sh | 1.157 × 10-12 d |
| 25 sh | 2.894 × 10-12 d |
| 50 sh | 5.787 × 10-12 d |
| 100 sh | 1.157 × 10-11 d |