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Jul
14
Tue
Jupiter at Opposition 00:48 MST
Jul 14 all-day
Jul
20
Mon
New Moon (10:33 MST).
Jul 20 all-day

New Moon

By the modern definition, New Moon occurs when the Moon and Sun are at the same geocentric ecliptic longitude. The part of the Moon facing us is completely in shadow then. Pictured here is the traditional New Moon, the earliest visible waxing crescent, which signals the start of a new month in many lunar and lunisolar calendars.

Moon overview on solarsystem.nasa.gov

Saturn at Opposition (15:00 MST).
Jul 20 all-day
Jul
22
Wed
Mercury at Greatest Elongation.
Jul 22 all-day
Jul
24
Fri
Moon at Perigee (21:54 MST).
Jul 24 all-day
Jul
27
Mon
Delta-Aquariids Meteor Shower.
Jul 27 all-day

Delta-Aquariids Meteor Shower

The Delta Aquariids are active beginning in mid-July and are visible until late-August. These faint meteors are difficult to spot, and if there is a moon you will not be able to view them. If the moon is not present, your best chance to see the Delta Aquariids is when meteor rates rise during the shower’s peak at the end of July.

If you are unable to view the Delta Aquariids during their peak, look for them again during the Perseids in August: You will know that you have spotted a Delta Aquarid if the meteor is coming from the direction of the constellation Aquarius—its radiant will be in the southern part of the sky. The Perseid radiant is in the northern part of the sky.

Data from NASA

Interactive animation from MeteorShowers.org.

Aug
1
Sat
Jupiter 1.5°N of Moon (16:30 MST).
Aug 1 all-day
Aug
3
Mon
Full Moon (08:59 MST).
Aug 3 all-day

Full Moon. Rises at sunset, high in the sky around midnight. Visible all night.

Moon overview on solarsystem.nasa.gov

Mars at Perihelion
Aug 3 all-day
Aug
5
Wed
Mercury at Perihelion.
Aug 5 all-day