The following table gives the date and time of important astronomical events for April 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 April 2017 ------ ----- -------------------------------------------- (h:m) Apr 01 08:50 Aldebaran 0.3°S of Moon Apr 01 10 Mercury at Greatest Elongation: 19.0°E Apr 03 18:39 FIRST QUARTER MOON Apr 05 12:45 Beehive 3.8°N of Moon Apr 07 04:30 Regulus 0.7°N of Moon Apr 07 09:14 Moon at Ascending Node Apr 07 21 Jupiter at Opposition Apr 10 21:20 Jupiter 2.2°S of Moon Apr 11 06:08 FULL MOON Apr 14 06 Uranus in Conjunction with Sun Apr 15 10:05 Moon at Apogee: 405478 km Apr 16 18:39 Saturn 3.2°S of Moon Apr 19 09:57 LAST QUARTER MOON Apr 20 06 Mercury at Inferior Conjunction Apr 21 08:16 Mars 3.4°S of Pleiades Apr 21 22:30 Moon at Descending Node Apr 22 12 Lyrid Meteor Shower Apr 23 17:59 Venus 5.2°N of Moon Apr 26 12:16 NEW MOON Apr 27 16:18 Moon at Perigee: 359325 km Apr 28 17:19 Aldebaran 0.5°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).
- More Information
- Sky Events Calendar (AstroPixels.com)
- This Week’s Sky at a Glance (Sky & Telescope)
- Heavens Above
- Cal Sky
- Star Date
- Eclipses During 2017 (EclipseWise.com)
- 2017 Total Solar Eclipse (EclipseWise.com)
- Additional Astronomical Events
- Solstices and Equinoxes: 2001 to 2100 (GMT)
- Perihelion and Aphelion: 2001 to 2100 (GMT)
- Phases of the Moon: 2001 to 2100 (Greenwich Mean Time)
- Full Moon at Perigee (Super Moon): 2001 to 2100 (GMT)
- More Astronomical Data (AstroPixels.com)
- Solar and Lunar Eclipses (EclipseWise.com)