Stargazing from Philadelphia

Philadelphia, in the United States, enjoys a fairly even balance between summer and winter nights — expect 1.5–2 hours of true astronomical darkness on either side of midnight year-round.

Common questions

What planets are visible tonight from Philadelphia?

None of the bright naked-eye planets (Mercury, Venus, Mars, Jupiter, Saturn) rise above 10° tonight from Philadelphia. That's normal — planet visibility cycles roughly every 1–2 months per planet.

What time does the sun set in Philadelphia tonight?

Sunset in Philadelphia tonight is at 20:19. Astronomical twilight (when the sky is fully dark) begins later.

Can I see the ISS from Philadelphia tonight?

Not tonight — there are no ISS passes above 20° altitude in your viewing window. Passes happen roughly every 90 minutes when the orbit lines up, so check again tomorrow.

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