Events for August 2017

The following table gives the date and time of important astronomical events for August 2017.

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 August 2017
------  -----  --------------------------------------------
        (h:m)
Aug 02  13     Mercury at Aphelion 
Aug 02  17:55  Moon at Apogee: 405026 km
Aug 03  07:31  Saturn 3.5°S of Moon
Aug 07  18:11  FULL MOON 
Aug 07  18:20  Partial Lunar Eclipse; mag=0.246
Aug 08  10:56  Moon at Descending Node 
Aug 12  19     Perseid Meteor Shower
Aug 15  01:15  LAST QUARTER MOON 
Aug 16  06:39  Aldebaran 0.4°S of Moon
Aug 18  13:14  Moon at Perigee: 366129 km
Aug 19  04:45  Venus 2.2°N of Moon
Aug 20  07:15  Beehive 3.2°N of Moon
Aug 20  18:08  Venus 7.2°S of Pollux
Aug 21  10:34  Moon at Ascending Node 
Aug 21  18:26  Total Solar Eclipse; mag=1.031
Aug 21  18:30  NEW MOON 
Aug 25  13:00  Jupiter 3.5°S of Moon
Aug 26  21     Mercury at Inferior Conjunction 
Aug 29  08:13  FIRST QUARTER MOON 
Aug 30  11:25  Moon at Apogee: 404307 km
Aug 30  14:23  Saturn 3.6°S of Moon

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

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

Time Zones Calendars of Astronomical Events
Greenwich Mean Time 2017 2018 2019 2020 2021 2022
Atlantic Standard Time 2017 2018 2019 2020 2021 2022
Eastern Standard Time 2017 2018 2019 2020 2021 2022
Central Standard Time 2017 2018 2019 2020 2021 2022
Mountain Standard Time 2017 2018 2019 2020 2021 2022
Pacific Standard Time 2017 2018 2019 2020 2021 2022
Alaska Standard Time 2017 2018 2019 2020 2021 2022
Hawaii Standard Time 2017 2018 2019 2020 2021 2022

For additional years, see Calendars of Astronomical Events.

The astronomical highlight of 2017 is the Great American Total Solar Eclipse on August 21. This is the first total eclipse visible from the continental USA in 38 years. For complete details on this highly anticipated event, see: 2017 Total Solar Eclipse (EclipseWise.com).

For information on all solar and lunar eclipses this year, see: Eclipses During 2017.

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

Fred Espenak



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