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Astronomy

Dec. 15, 2017 Rise Solar Noon Set
Actual Time 6:54 AM HKT 12:18 PM HKT 5:42 PM HKT
Civil Twilight 6:30 AM HKT   6:06 PM HKT
Nautical Twilight 6:02 AM HKT   6:34 PM HKT
Astronomical Twilight 5:35 AM HKT   7:01 PM HKT
Altitude -0.8° 44.5° -0.8°
Azimuth 114.9° 180.0° 245.1°
Hour Angle of the Sun 80.9° 80.9° -80.9°
Mean Anomaly of the Sun 340.56° 340.78° 341.00°
Obliquity 23.44° 23.44° 23.44°
Right Ascension of the Sun -97.46° -97.22° -96.97°
Sun Declination -23.26° -23.27° -23.28°
Moon 4:06 AM HKT   3:45 PM HKT
Length of Visible Light 11h 35m
Length of Day
10h 47m
Waning Crescent, 9% of the Moon is Illuminated
Dec 14
Waning Crescent
Dec 18
New
Dec 26
First Quarter
Jan 1
Full
Jan 8
Last Quarter