Events for July 2013

The following table gives the date and time of important astronomical events for July 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 July 2013
------  -----  --------------------------------------------
        (h:m)
Jul 03  04:15  Moon at Descending Node 
Jul 03  15:26  Venus 0.1°N of Beehive
Jul 05  06:09  Aldebaran 3.4°S of Moon
Jul 05  18:59  Earth at Aphelion: 1.01671 
Jul 07  00:36  Moon at Apogee: 406493 km
Jul 08  07:14  NEW MOON 
Jul 09  19     Mercury at Inferior Conjunction 
Jul 12  01:45  Regulus 5.7°N of Moon
Jul 16  03:13  Spica 0.3°S of Moon
Jul 16  03:18  FIRST QUARTER MOON 
Jul 17  01:19  Saturn 3.3°N of Moon
Jul 17  14:58  Moon at Ascending Node 
Jul 21  20:27  Moon at Perigee: 358402 km
Jul 22  09:30  Venus 1.0°N of Regulus
Jul 22  18:15  FULL MOON 
Jul 28  02     Delta-Aquarid Meteor Shower
Jul 28  19     Mercury 6.9° of Mars
Jul 29  17:43  LAST QUARTER MOON 
Jul 30  05:50  Moon at Descending Node 
Jul 30  09     Mercury at Greatest Elongation: 19.6°W

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 2012 2013 2014 2015 2016 2017 2018 2019 2020
Eastern Standard Time 2012 2013 2014 2015 2016 2017 2018 2019 2020
Central Standard Time 2012 2013 2014 2015 2016 2017 2018 2019 2020
Mountain Standard Time 2012 2013 2014 2015 2016 2017 2018 2019 2020
Pacific Standard Time 2012 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