Events for May 2015

The following table gives the date and time of important astronomical events for May 2015. 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 May_ 2015
------  -----  --------------------------------------------
        (h:m)
May 01  01:29  Mercury 1.6°S of Pleiades
May 01  09:50  Moon at Ascending Node 
May 02  11:10  Spica 3.5°S of Moon
May 04  03:42  FULL MOON 
May 05  13     Eta-Aquarid Meteor Shower
May 05  16:19  Saturn 2.0°S of Moon
May 07  05     Mercury at Greatest Elongation: 21.2°E
May 11  10:36  LAST QUARTER MOON 
May 14  20:37  Moon at Descending Node 
May 15  00:23  Moon at Perigee: 366024 km
May 18  04:13  NEW MOON 
May 19  06:51  Mercury 5.7°N of Moon
May 23  01     Saturn at Opposition 
May 24  07:03  Jupiter 5.1°N of Moon
May 25  11:14  Regulus 3.8°N of Moon
May 25  17:19  FIRST QUARTER MOON 
May 26  22:12  Moon at Apogee: 404246 km
May 28  14:40  Moon at Ascending Node 
May 29  17:27  Venus 3.9°S of Pollux
May 29  18:52  Spica 3.6°S of Moon
May 30  17     Mercury at Inferior 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 eight time zones are available through the links below.

Time Zones Calendars of Astronomical Events
Greenwich Mean Time 2015 2016 2017 2018 2019 2020
Atlantic Standard Time 2015 2016 2017 2018 2019 2020
Eastern Standard Time 2015 2016 2017 2018 2019 2020
Central Standard Time 2015 2016 2017 2018 2019 2020
Mountain Standard Time 2015 2016 2017 2018 2019 2020
Pacific Standard Time 2015 2016 2017 2018 2019 2020
Alaska Standard Time 2015 2016 2017 2018 2019 2020
Hawaii Standard Time 2015 2016 2017 2018 2019 2020

For additional years, see Calendars of Astronomical Events.

For detailed information on solar and lunar eclipses this year, see: Eclipses During 2015.

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