What time is sunset in Portsmouth today?

Sunset in Portsmouth is at 6:13 PM local time (America/New_York) on 2026-10-07.

What phase is the Moon tonight in Portsmouth?

The Moon is a Waning Crescent and about 10% illuminated.

Astronomical twilight ends at 7:47 PM local time, so the sky is fully dark from then until 5:14 AM.

Moonrise in Portsmouth is at 3:18 AM and moonset is at 4:47 PM local time.

The aurora is possible from Portsmouth if the sky is dark and clear; planetary Kp is 1.0.

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Kp1.0

Solar wind350 km/s

X-rayC1.1

StormG0 (Quiet)

Source: NOAA SWPC

2026-10-07 · times in America/New_York · 43.08°N, 70.76°W

Event	Time
Sunrise	6:47 AM
Sunset	6:13 PM
Day length	11 h 26 min
End of civil twilight	6:41 PM
End of nautical twilight	7:14 PM
End of astronomical twilight	7:47 PM
Night length (sunset to sunrise)	12 h 35 min
Fully dark sky tonight	9 h 26 min
Astronomical twilight starts (morning)	5:14 AM

Moonrise	3:18 AM
Moonset	4:47 PM
Illumination	9.6%
Phase	Waning Crescent
Sublunar point (Moon overhead)	7.63°N, 122.30°W
Sublunar point ground speed	1,602 km/h

Moon values are for the moment this page was generated (17:42 UTC). A moonrise or moonset can be missing on a given date.

Planet	Rise	Set	Meridian	Visibility
Mercury (mag -0.1)	9:02 AM	6:58 PM	2:00 PM	Not visible tonight: below the horizon (or too low) while the sky is dark.
Venus (mag -4.6)	9:12 AM	6:27 PM	1:50 PM	Not visible tonight: below the horizon (or too low) while the sky is dark.
Mars (mag 1.1)	12:47 AM	3:33 PM	8:10 AM	Visible about 5 h after dark, highest 56° toward the SE.
Jupiter (mag -1.9)	2:10 AM	4:12 PM	9:11 AM	Visible about 3.8 h after dark, highest 43° toward the SE.
Saturn (mag 0.2)	6:11 PM	6:33 AM	12:24 AM	Visible about 11.5 h after dark, highest 49° toward the S.

Aurora possible

Portsmouth is far enough from the equator for aurora. Planetary Kp is 1.0. Seeing it still needs a dark, clear sky.

NOAA SWPC OVATION model. Full aurora forecast