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35 lines
887 B
Python
35 lines
887 B
Python
from datetime import datetime, timedelta, time
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midday = time(12)
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import astropy.coordinates as coord
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from astropy.time import Time
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import config
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def time2altitude(time: datetime) -> float:
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astro_time = Time(time.astimezone())
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altaz = coord.AltAz(location=config.loc, obstime=astro_time)
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sun = coord.get_sun(astro_time)
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return sun.transform_to(altaz).alt.degree
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def get_time(altitude, time=False):
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lower = datetime.combine(datetime.now().date(), midday)
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upper = lower + timedelta(hours=12)
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while upper - lower > timedelta(seconds=30):
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middle = lower + (upper - lower) / 2
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if time2altitude(middle) > altitude:
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lower = middle
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else:
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upper = middle
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# print(upper, lower)
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return lower + (upper - lower) / 2
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if __name__ == "__main__":
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target = 14.480046611643763
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print(get_time(target))
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