Events for December 2013

The following table gives the date and time of important astronomical events for December 2013. The time of each event is given in Greenwich Mean Time or GMT (a.k.a. Universal Time or UT). To convert GMT to Eastern Standard Time (EST) just subtract 5 hours. To convert GMT to other time zones, visit Time Zones. Some of the astronomical terms used in the calendar are explained in Definitions.

 Date    GMT   Astronomical Events for December 2013
------  -----  --------------------------------------------
        (h:m)
Dec 01  10:13  Saturn 1.2°N of Moon: Occultation
Dec 03  00:22  NEW MOON 
Dec 04  10:15  Moon at Perigee: 360065 km
Dec 09  15:12  FIRST QUARTER MOON 
Dec 13  10:10  Moon at Descending Node 
Dec 14  05     Geminid Meteor Shower
Dec 16  02:45  Aldebaran 2.7°S of Moon
Dec 17  09:28  FULL MOON 
Dec 19  07:11  Jupiter 5.0°N of Moon
Dec 19  23:49  Moon at Apogee: 406269 km
Dec 21  17:11  Winter Solstice 
Dec 22  00     Mercury at Aphelion 
Dec 22  14     Ursid Meteor Shower
Dec 22  22:47  Regulus 5.4°N of Moon
Dec 25  13:48  LAST QUARTER MOON 
Dec 26  02:45  Mars 4.6°N of Moon
Dec 27  02:10  Spica 1.0°S of Moon
Dec 28  00:21  Moon at Ascending Node 
Dec 29  01:42  Saturn 0.9°N of Moon: Occultation
Dec 29  06     Mercury at Superior Conjunction 

As the events above transpire, I will post photographs of some of them at Recent Images.

Astronomical events calendars for complete years and for five time zones are available through the links below.

Time Zones Calendars of Astronomical Events
Greenwich Mean Time 2013 2014 2015 2016 2017 2018 2019 2020
Eastern Standard Time 2013 2014 2015 2016 2017 2018 2019 2020
Central Standard Time 2013 2014 2015 2016 2017 2018 2019 2020
Mountain Standard Time 2013 2014 2015 2016 2017 2018 2019 2020
Pacific Standard Time 2013 2014 2015 2016 2017 2018 2019 2020

For additional years and time zones, see Calendars of Astronomical Events.

The sky events tables were all generated by a computer program I wrote (with THINK Pascal running on a Macintosh G4) using Astronomical Algorithms (Jean Meeus).

Fred Espenak