The Moon on this date
Moon on Friday, July 21, 1978
Waning Gibbous
96.3% illuminated · waning
Shown at midday from Columbus, US.
Rise, set and path
Times for Columbus, US
- Moonrise
- E
- Highest
- 36°
- Moonset
- W
60°30°
Horizon
10:01 PM
8:11 AM
36°
Key figures
- Illuminated
- 96.3%
- Age
- 16.3 days
- Distance
- 360,000 km
- Apparent size
- 33.2′
- Constellation
- Aquarius
- Lunation number
- 687
Events on this date
-
Mercury at greatest elongation
27° from the Sun in the evening sky, its best showing after sunset.
Exact values
For Jul 21, 12:00 PM, midday on this date.
| Elongation from the Sun | 201.89° |
|---|---|
| Phase angle | 22.05° |
| Illuminated fraction | 96.34% |
| Altitude / azimuth | -41.2° / 292.0° |
| Right ascension / declination | 21h 27m / -11.70° |
| Ecliptic longitude / latitude | 320.43° / 3.14° |
| Libration in longitude / latitude | 3.18° / -3.78° |
| Sub-solar longitude / latitude | -18.04° / -1.33° |
| Position angle of the axis | 340.7° |
| Position angle of the bright limb | 64.7° |
| Apparent magnitude | -12.2 |
Directions are good to about a hundredth of a degree and the distance to about 50 km; more digits would not mean anything.