Convert Minute (min) to Second (Sidereal) (s (sidereal)) instantly.
About these units
Minute (min)
A minute is equal to 60 seconds, a remnant of the ancient Babylonian base-60 (sexagesimal) numeral system. Civilizations such as the Sumerians and Babylonians divided circles, geometry, and time into 60-based increments, an elegant system that persists today in minutes and seconds. Minutes serve as a comfortable human-scale unit—long enough to measure meaningful intervals (such as short tasks or durations in sports) yet short enough to maintain precision in technical contexts. Meteorologists, musicians, aviators, and engineers still rely heavily on minutes because they allow intuitive expression of small-to-medium time spans. Despite its ancient origin, the minute remains an indispensable unit in modern life, reflecting our deep cultural inheritance from early mathematical civilizations.
Second (Sidereal) (s (sidereal))
A sidereal second is 1/60 of a sidereal minute, equal to about 0.99727 solar seconds. While the difference seems small, it accumulates noticeably over long observing sessions. Sidereal seconds ensure that telescope mounts and tracking systems remain synchronized with the rotation of the celestial sphere. The distinction between solar and sidereal seconds underscores the complexity of Earth's rotational dynamics—reminding us that even "one second" depends on which cosmic frame of reference we choose.