The phenomena of the month : July 2021 Times are given in UT for Aveiro (8° 38' 55" W, 40° 38' 20" N, zone Z). Date Hour Description of the phenomenon yyyy mm dd hh:mm 1 2021 07 01 17:09 Maximum of the variable star delta Cephei 2 2021 07 01 21:11 LAST QUARTER OF THE MOON 3 2021 07 03 03:02 Beginning of occultation of 106-nu Psc (magn. = 4,45) 4 2021 07 03 03:17 End of occultation of 106-nu Psc (magn. = 4,45) 5 2021 07 03 08:21 Close encounter between Venus and M 44 (topocentric dist. center to center = 0,1°) 6 2021 07 03 09:38 Minimum of the variable star Algol (beta Persei) 7 2021 07 03 13:51 Opposition of the asteroid 27 Euterpe with the Sun (dist. to the Sun = 2,743 AU; magn. = 10,4) 8 2021 07 04 02:33 Beginning of occultation of 24-xi Ari (magn. = 5,48) 9 2021 07 04 03:35 End of occultation of 24-xi Ari (magn. = 5,48) 10 2021 07 04 17:47 Close encounter between the Moon and Uranus (topocentric dist. center to center = 2,4°) 11 2021 07 05 06:00 GREATEST WESTERN ELONGATION of Mercury (21,3°) 12 2021 07 05 14:48 Moon at apogee (geocentric dist. = 405341 km) 13 2021 07 05 22:00 The Earth at its aphelion (distance to the Sun = 1,01673 AU) 14 2021 07 06 01:13 Maximum of the variable star eta Aquilae 15 2021 07 06 06:27 Minimum of the variable star Algol (beta Persei) 16 2021 07 07 01:56 Maximum of the variable star delta Cephei 17 2021 07 08 02:19 Close encounter between the Moon and Mercury (topocentric dist. center to center = 3,0°) 18 2021 07 09 03:15 Minimum of the variable star Algol (beta Persei) 19 2021 07 10 01:16 NEW MOON 20 2021 07 10 16:19 Maximum of the variable star zeta Gemini 21 2021 07 12 00:04 Minimum of the variable star Algol (beta Persei) 22 2021 07 12 01:29 Minimum of the variable star beta Lyrae 23 2021 07 12 08:30 Close encounter between the Moon and Venus (topocentric dist. center to center = 2,8°) 24 2021 07 12 10:11 Close encounter between the Moon and Mars (topocentric dist. center to center = 3,4°) 25 2021 07 12 10:43 Maximum of the variable star delta Cephei 26 2021 07 13 01:00 Mars at its aphelion (distance to the Sun = 1,66596 AU) 27 2021 07 13 05:27 Maximum of the variable star eta Aquilae 28 2021 07 13 11:59 Close encounter between Mercury and M 35 (topocentric dist. center to center = 2,2°) 29 2021 07 13 13:36 Close encounter between Venus and Mars (topocentric dist. center to center = 0,5°) 30 2021 07 13 15:08 Comet 15P Finlay at its perihelion (dist. to the Sun = 0,992 AU; magn. = 12,3) 31 2021 07 14 20:53 Minimum of the variable star Algol (beta Persei) 32 2021 07 17 09:56 Opposition of the asteroid 6 Hebe with the Sun (dist. to the Sun = 2,281 AU; magn. = 8,4) 33 2021 07 17 10:11 FIRST QUARTER OF THE MOON 34 2021 07 17 17:41 Minimum of the variable star Algol (beta Persei) 35 2021 07 17 19:30 Maximum of the variable star delta Cephei 36 2021 07 17 22:44 OPPOSITION of Pluto with the Sun 37 2021 07 19 22:16 Beginning of occultation of 45-lambda Lib (magn. = 5,04) 38 2021 07 19 23:12 End of occultation of 45-lambda Lib (magn. = 5,04) 39 2021 07 20 09:41 Maximum of the variable star eta Aquilae 40 2021 07 20 14:30 Minimum of the variable star Algol (beta Persei) 41 2021 07 20 19:55 Maximum of the variable star zeta Gemini 42 2021 07 21 10:30 Moon at perigee (geocentric dist. = 364521 km) 43 2021 07 22 01:35 Close encounter between the Moon and M 8 (topocentric dist. center to center = 1,8°) 44 2021 07 22 03:16 Close encounter between Venus and Regulus (topocentric dist. center to center = 1,1°) 45 2021 07 23 04:17 Maximum of the variable star delta Cephei 46 2021 07 23 11:18 Minimum of the variable star Algol (beta Persei) 47 2021 07 23 15:11 Close encounter between the Moon and Pluto (topocentric dist. center to center = 2,5°) 48 2021 07 23 23:40 Opposition of the asteroid 236 Honoria with the Sun (dist. to the Sun = 2,459 AU; magn. = 10,2) 49 2021 07 24 01:00 Mercury at its perihelion (distance to the Sun = 0,30750 AU) 50 2021 07 24 02:37 FULL MOON 51 2021 07 24 16:33 Close encounter between the Moon and Saturn (topocentric dist. center to center = 4,3°) 52 2021 07 25 00:03 Minimum of the variable star beta Lyrae 53 2021 07 26 05:59 Close encounter between the Moon and Jupiter (topocentric dist. center to center = 4,4°) 54 2021 07 26 08:07 Minimum of the variable star Algol (beta Persei) 55 2021 07 27 13:55 Maximum of the variable star eta Aquilae 56 2021 07 27 19:31 Close encounter between the Moon and Neptune (topocentric dist. center to center = 4,6°) 57 2021 07 27 21:47 Meteor shower : Piscis Austrinids (5 meteors/hour at zenith; duration = 26,0 days) 58 2021 07 28 13:04 Maximum of the variable star delta Cephei 59 2021 07 29 04:56 Minimum of the variable star Algol (beta Persei) 60 2021 07 29 08:45 Opposition of the asteroid 344 Desiderata with the Sun (dist. to the Sun = 1,812 AU; magn. = 10,2) 61 2021 07 29 21:22 Simultaneous transits on Jupiter: two satellites and shadow of one satellite. 62 2021 07 29 22:25 Simultaneous transits on Jupiter: two satellites. 63 2021 07 30 00:00 Meteor shower : Alpha Capricornids (5 meteors/hour at zenith; duration = 43,0 days) 64 2021 07 30 00:00 Meteor shower : S. Delta Aquarids (25 meteors/hour at zenith; duration = 43,0 days) 65 2021 07 30 01:17 Close encounter between Mars and Regulus (topocentric dist. center to center = 0,6°) 66 2021 07 30 18:31 Opposition of the asteroid 12 Victoria with the Sun (dist. to the Sun = 1,821 AU; magn. = 8,7) 67 2021 07 30 23:30 Maximum of the variable star zeta Gemini 68 2021 07 31 13:16 LAST QUARTER OF THE MOON.