Convert Minute (min) to Day (Sidereal) (d (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.
Day (Sidereal) (d (sidereal))
A sidereal day is the time Earth takes to rotate exactly 360 degrees relative to the distant stars—about 23 hours, 56 minutes, 4 seconds. In contrast, the solar day is slightly longer because Earth advances in its orbit each day and must rotate extra degrees for the Sun to appear in the same position in the sky. Sidereal days are fundamental to astronomy: telescopes use sidereal time to track stars, which appear in the same position in the sky at the same sidereal moment each night. This unit anchors astronomical observation to the cosmos rather than to the Sun.