Sidereal Day to Month (30 days) Converter

Time Converter

21 units available

Decimals:

From

To

0.033242

1 sid day = 0.033242 mo

Formula:

mo = sid day × 0.0332423189

With your value: 1 sid day = 0.03324232 mo

How big is that?

Everyday references on a logarithmic scale, all expressed in sidereal day so you can sanity-check the result.

Minute (1/1.4e+3 your value)0.000696 sid day

Working day (1/3.0 your value)0.334 sid day

Your value1.00 sid day

Day (1.0× your value)1.00 sid day

Week (7.0× your value)7.02 sid day

Year (3.7e+2× your value)366 sid day

Other Sidereal Day to Month (30 days) conversions

2 sid day to mo 3 sid day to mo 4 sid day to mo 5 sid day to mo 6 sid day to mo 7 sid day to mo 8 sid day to mo

Sidereal Day to Month (30 days) Conversion Table

Sidereal Day (sid day)	Month (30 days) (mo)
0.5	0.016621
1	0.033242
2	0.066485
5	0.166212
10	0.332423
15	0.498635
20	0.664846
25	0.831058
50	1.662116
100	3.324232
250	8.31058
500	16.621159
1000	33.242319

Month (30 days) to Sidereal Day Conversion Table

Month (30 days) (mo)	Sidereal Day (sid day)
0.5	15.041069
1	30.082137
2	60.164275
5	150.410686
10	300.821373
15	451.232059
20	601.642746
25	752.053432
50	1,504.106865
100	3,008.213729
250	7,520.534323
500	15,041.068646
1000	30,082.137291

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Sidereal Day (sid day)

Time

SI definition

Traceable to the second, defined by fixing the caesium-133 hyperfine transition frequency at 9 192 631 770 Hz.

Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)

Bureau International des Poids et Mesures · Reviewed 2026-07-01

Month (30 days) (mo)

Time

SI definition

Traceable to the second, defined by fixing the caesium-133 hyperfine transition frequency at 9 192 631 770 Hz.

Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)

Bureau International des Poids et Mesures · Reviewed 2026-07-01

How to Convert Sidereal Day to Month (30 days)

To convert from Sidereal Day (sid day) to Month (30 days) (mo), multiply the value by 0.0332423189.

Formula: mo = sid day × 0.0332423189

Reverse: sid day = mo × 30.0821372913

Step-by-Step Example

Start with your value in Sidereal Day. For example: 5 sid day
Multiply by the conversion factor: 5 x 0.0332423189
The result is: 0.166212 mo

About Sidereal Day

The sidereal day (sid day) is a unit of time. One sidereal day equals 86164.0905 seconds. UnitConvertLab converts it against every other time unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: time calculations, engineering and science, education.

About Month (30 days)

The month (30 days) (mo) is a unit of time. One month (30 days) equals 2.592000 × 10^+6 seconds. UnitConvertLab converts it against every other time unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: time calculations, engineering and science, education.

Frequently Asked Questions

How many Month (30 days) are in 1 Sidereal Day?

There are exactly 0.0332423189 Month (30 days) in 1 Sidereal Day. This means the conversion factor from Sidereal Day to Month (30 days) is 0.0332423189.

What is the formula to convert Sidereal Day to Month (30 days)?

The formula to convert Sidereal Day to Month (30 days) is: mo = sid day × 0.0332423189. For example, to convert 10 Sidereal Day to Month (30 days), you would multiply 10 by 0.0332423189.

What is a Sidereal Day?