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https://spaces.imperial.edu/russell.lavery/mypage/astrostuff/a120web2000/Lectures/A120week03.html#:~:text=So%2C%20at%20Noon%20on%20the%20Solar%20Clock%20%28Sun,of%205%20hours%20will%20be%20crossing%20the%20meridian.
https://kalobs.org/more/sidereal-time/
And when a star’s RA is 11 hours at 8 o’clock local sidereal time, its HA is 21 hours west of the meridian, which is more commonly stated as minus 3 hours or 3 hours east of the meridian. An hour later, the sphere has rotated westward, the hour angle of the vernal equinox is nine hours and the sidereal time at the meridian is 9 o’clock.
https://www.grc.nasa.gov/WWW/k-12/Numbers/Math/Mathematical_Thinking/telling_time_by_the_stars.htm
(0.683 sidereal days) x (23.9345 hr/sidereal day) = 16.347 hr = 16 hr 21 min. (i.e., a sidereal clock at noon solar time on November 29 reads 4 hr 21 min ahead of a solar clock).
https://earthsky.org/astronomy-essentials/what-is-sidereal-time/
A sidereal day – 23 hours 56 minutes and 4.1 seconds – is the amount of time needed to complete one rotation.
https://sidereal.app/calculate
Calculate Local Sidereal Time. Calculate Sidereal time for selected city
https://www.aa.quae.nl/en/reken/sterrentijd.html
Both methods yield the answer 45.61655° which is equivalent to 45.61655°/15° = 3.0411 hours = 03:02 hours, so the sidereal time at the chosen date, time, and location is 03:02 hours.
http://astro.unl.edu/mobile/SideReal/index.html
Summer Solstice -- ~June 21 -- the sun has an RA of 6 hours and is north (above) of the celestial equator. Autumnal Equinox -- ~September 21 --the sun has an RA of 12 hours and is on the celestial sphere. ... Problem 4: If the local sidereal time is 7 hours, what is the HA of a star with an RA of 10 hours? Problem 5: If it is 6 pm on the ...
https://squarewidget.com/astronomical-calculations-sidereal-time/
That means as A crosses your local meridian then your local sidereal time (LST) is 19:00 hours. And later when B crosses your local meridian you would say it is now 23:00 LST. Before I say anything else about sidereal time I need to say a few words about the celestial sphere.
http://neoprogrammics.com/sidereal_time_calculator/
Sidereal Time Calculator For Any Date, Time and Longitude: Local Date ±YMD (Neg=BC) Local Time HMS (00 to 24h) Time Zone Difference HM (00 to ±12h) ΔT (Delta T) ±HMS: Local Time = UT: 2459552.5: 0.000000000000 +0.208333333333 +0.000000000000 : Calendar Mode: Julian Gregorian
https://lco.global/spacebook/sky/sidereal-time/
1 sidereal day = 23 hours, 56 minutes, 4.1 seconds. Sidereal time is useful to astronomers because any object crosses the upper meridian when the local sidereal time is equal to the object's right ascension.
https://spaces.imperial.edu/russell.lavery/mypage/astrostuff/a120web2000/Lectures/A120week03.html
Feb. 21, Sun is at 22 hours. Feb. 6th is halfway between Jan. 21 and Feb. 21. So, at Noon on the Solar Clock (Sun on the meridian), the Sidereal Time will be 21 hours. Since you have to wait 8 hours to go from 21 hours to 5 hours on the Sidereal Clock, you have to wait 8 hours on the Solar Clock. 8 hours after Noon is 8 pm. So, on Feb. 6th at 8 pm, R.A. of 5 hours will be crossing the meridian. Other Examples of …
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