Instant · Precise · Universal
28 units available
6 categories total
To convert tropical years to days: multiply by 365.24219. To Julian years: multiply by 365.24219/365.25.
1 tropical year ≈ 365.24219 days ≈ 365 d 5 h 48 min 45 s. Shorter than the sidereal year by about 20 minutes due to precession.
For example, 1 Year (Tropical) (yr (Trop)) = 527388.7887 Minute (Sidereal) (min (Sid)).
| Year (Tropical) (yr (Trop)) | Minute (Sidereal) (min (Sid)) |
|---|---|
| 0.1 | 52738.87887 |
| 0.5 | 263694.3943 |
| 1 | 527388.7887 |
| 2 | 1054777.577 |
| 5 | 2636943.943 |
| 10 | 5273887.887 |
| 25 | 13184719.72 |
| 50 | 26369439.43 |
| 100 | 52738878.87 |
| 500 | 263694394.3 |
| 1000 | 527388788.7 |
The tropical year is the time for the Sun to return to the same equinox point — approximately 365.24219 days (31,556,925.216 seconds).
1 tropical year ≈ 365.24219 days ≈ 365 d 5 h 48 min 45 s. Shorter than the sidereal year by about 20 minutes due to precession.
To convert tropical years to days: multiply by 365.24219. To Julian years: multiply by 365.24219/365.25.
Calendar design — the Gregorian calendar's average year (365.2425 days) approximates the tropical year to within 26 seconds.
The tropical year is slowly shortening — by about 0.53 seconds per century. In the year 1900, it was 365.24220 days.
Confusing tropical year with sidereal year — the tropical year is ~20 minutes shorter due to axial precession.
The tropical year governs seasons. If we used the sidereal year for calendars, seasons would slowly drift through the months over ~26,000 years.
The sidereal minute is 1/60 of a sidereal hour — approximately 59.836 seconds in solar time.
1 sidereal minute = 59.836 solar seconds. 60 sidereal minutes = 1 sidereal hour.
To convert sidereal minutes to solar seconds: multiply by 59.836. To solar minutes: multiply by 0.99727.
Precise observation timing, transit event recording, and telescope tracking rate calibration.
A sidereal minute is about 0.164 seconds shorter than a solar minute — small but significant over an observing session.
Using solar minutes when sidereal minutes are required in astronomical calculations — the error accumulates over time.
Sidereal minutes/seconds are just slightly shorter than their solar counterparts. The ratio is always ~0.99727.



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