Questions tagged [sunset]

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National Take A Knee Moment Strategy [closed]

How can a national participation moment (period) be planned? Impractical, but as an idea useful for imagining a rationale for this question: Starting in NYC and moving across the country to San ...
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1answer
41 views

How to calculate sunrise and sunset on on a given date and location?

I have a given date at any time in future or past eg: 2016-04-23 or 2022-05-12 Now given at any location(lat,lng). How do i find the time of sunrise or sunset.
3
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1answer
79 views

Deducing the hour based on RA

I'm making a technological project. The goal is to write a program that gets an image of the nightsky and predicts the hour in which the photo was taken. I implemented a well-known method using the ...
1
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2answers
72 views

How to find how many degrees from the beginning to the end of the sunset?

According to what I what told here there is 0.5 degrees from the beginning the end of the sunset. Unfortunately I didn't understand two things: 1) How can I prove in the simplest way that there'...
12
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3answers
2k views

How long do the phases of sunset take? [duplicate]

How long does it take from the moment the Sun star 'touches' the horizon, to the time it totally disappear? (I'm not talking about the radiation (rays), but just about the appearance of the star by ...
5
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1answer
146 views

Was the Earth-Sun distance ever calculated based on the time difference between night and day?

If we define sunrise and sunset as the time when the center of the Sun goes over the horizon then day time is a little bit shorter than night time because from a single point one cannot see a complete ...
2
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1answer
77 views

Seeing a star near zenith around sunset

I'm recalling while taking a university astronomy class the professor brought a few of us up to the observatory, around sunset. He showed us a star near zenith with the telescope. After we left the ...