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Astronomy

Dec. 12, 2017 Rise Solar Noon Set
Actual Time 6:53 AM HKT 12:17 PM HKT 5:40 PM HKT
Civil Twilight 6:28 AM HKT   6:05 PM HKT
Nautical Twilight 6:00 AM HKT   6:33 PM HKT
Astronomical Twilight 5:33 AM HKT   7:00 PM HKT
Altitude -0.8° 44.7° -0.8°
Azimuth 114.7° 180.0° 245.3°
Hour Angle of the Sun 81.0° 81.0° -80.9°
Mean Anomaly of the Sun 337.60° 337.82° 338.04°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -100.78° -100.53° -100.28°
Sun Declination -23.07° -23.08° -23.10°
Moon 1:30 AM HKT   1:51 PM HKT
Length of Visible Light 11h 36m
Length of Day
10h 47m
Waning Crescent, 30% of the Moon is Illuminated
Dec 12
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter