Direct conversion
Convert hour [h] to sidereal day [sidereal day] instantly with formula, examples, chart, and FAQs.
1 hour [h] = 0.041781 sidereal day [sidereal day]
1 hour [h] = 0.041781 sidereal day [sidereal day]
Example: 1 hour [h] equals 0.041781 sidereal day [sidereal day].
Time conversions use second as the reference unit. Calendar-style values such as average month and average Gregorian year are approximate by definition.
Displayed results are rounded for readability. The calculator keeps enough precision for everyday use and switches to scientific notation for very large or very small values. Last reviewed: 2026-08-14.
The hour is a time unit equal to 60 minutes or 3600 seconds.
HistoryHours have ancient roots in dividing the day and night into regular intervals.
Current useHours are used for work time, travel duration, billing, appointments, energy use, and daily planning.
The sidereal day (sidereal day) is a time unit used to express measurements in this converter.
HistoryThis unit is included because it appears in practical measurement systems, technical references, product specifications, or everyday conversion needs.
Current useUse sidereal day when comparing time values, checking specifications, converting between systems, or preparing quick estimates.
| hour [h] | sidereal day [sidereal day] |
|---|---|
| 1 | 0.041781 |
| 2 | 0.083561 |
| 5 | 0.208904 |
| 10 | 0.417807 |
| 20 | 0.835615 |
| 25 | 1.044519 |
| 50 | 2.089037 |
| 100 | 4.178075 |
| 1000 | 41.780746 |
Use this formula: 1 hour [h] = 0.041781 sidereal day [sidereal day] Enter your value in the calculator and the result updates instantly.
1 hour [h] equals 0.041781 sidereal day [sidereal day].
Yes. Use the swap button in the calculator or open the related reverse conversion link when it is listed on this page.