July 1921 Zeru gertakariak
Behatzailearen kokapena：Beijing (39.904°, 116.407°)
Planeten ikuspegi orokorra
22 guztira zeru-gertaerak, barne 4 ilargi-faseak eta 3 planetako gertaerak.
Zeru gertakariak
Ordu guztiak tokiko orduan daude (Asia/Shanghai)
| Data | Egunsentia/ilunabarra | Ilargi-irteera/ilargi-sarrera | Ilargi-fasea | Zeru gertakariak |
|---|
Planetary outlook
July 1921 mid-month observing conditions
Mercury
Observation tip: Binoculars are recommended; Mercury stays close to the Sun; best seen at dusk or dawn
Venus
Observation tip: Very bright, easily visible to the naked eye; Venus is the brightest planet and is best seen at dusk or dawn
Mars
Observation tip: Visible to the naked eye; Its reddish appearance is obvious; it is best observed near opposition
Jupiter
Observation tip: Very bright, easily visible to the naked eye; Its moons are easy to spot and it is excellent for telescope observing
Saturn
Observation tip: Visible to the naked eye; Saturn’s rings require a telescope to see clearly
Uranus
Observation tip: Binoculars are recommended; Binoculars or a telescope are recommended
Neptune
Observation tip: A telescope is required; A telescope is required; Neptune appears blue-green
Moon
Observation tip: Moon illumination 77.9%; good for observing lunar surface detail
1921 sky events by month
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