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Hertford Castle

Hertford Castle

Water Lane, Hertford, Hertfordshire, SG14 1HR, East of England

Best time to visit

Hertford Castle is a private location and is only accessible out of normal hours for stargazing by prior arrangement or when public events are scheduled.

Weather forecast

  • 16/04/26

    14° 53%

  • 16/04/26

    14° 11%

  • 16/04/26

    13° 9%

  • 17/04/26

    11° 5%

Weather forecast for Potters Bar (7.9 miles away) updated 15/04/26 at 12:01. Powered by Met Office data.

Local light pollution

Hertford Castle is estimated to have light pollution levels similar to a suburban location based on the latest data from the VIIRS satellite. For more advanced light pollution data, view this location on DarkSkySites.

The above demonstrates the estimated effect of light pollution - graphics created using Stellarium.

Light pollution map of Hertford Castle

Best time to visit

The Moon has a big impact on the visibility of celestial bodies in the night sky. Try to plan your stargazing when there is no bright Moon at night as this is when the skies will be at their darkest.

The below chart shows when the skies will be at their darkest at this location and therefore the best time to visit. Moonlight is shown in light yellow and the Sun's twilight in light blue. Midnight on the date shown is shown as a white line with sunset to the left and sunrise the next morning to the right. A black background with stars shows the best times for stargazing. See our dark sky calendar for more details.

Moon phase on Thu 16th Apr

Thu 16th Apr

New Moon
3 % illuminated
Dark from 20:19 to 03:38
Dark for 7h 18m
Moon phase on Fri 17th Apr

Fri 17th Apr

New Moon
0 % illuminated
Dark from 20:21 to 03:35
Dark for 7h 13m
Moon phase on Sat 18th Apr

Sat 18th Apr

New Moon
0 % illuminated
Dark from 21:10 to 03:33
Dark for 6h 23m
Moon phase on Sun 19th Apr

Sun 19th Apr

New Moon
3 % illuminated
Dark from 22:43 to 03:30
Dark for 4h 47m
Moon phase on Mon 20th Apr

Mon 20th Apr

Waxing Crescent
9 % illuminated
Dark from 00:06 to 03:27
Dark for 3h 21m
Moon phase on Tue 21st Apr

Tue 21st Apr

Waxing Crescent
17 % illuminated
Dark from 01:10 to 03:25
Dark for 2h 15m
Moon phase on Wed 22nd Apr

Wed 22nd Apr

Waxing Crescent
27 % illuminated
Dark from 01:53 to 03:22
Dark for 1h 29m

Find more dates

If you are planning to visit this location check our dark sky calendar to find out when is best!

Calendar

Events nearby

Display nearby events on a calendar

  • Informal observing evening with Crayford Manor Astronomical Society

    Thursday 16th April 2026 from 19:45pm to 21:30pm

    The Dick Chambers Observatory, Dartford, DA4 9HD (29.5 miles away)

    More info

  • Loughton Astronomical Society meeting and observing

    Thursday 16th April 2026 from 20:00pm to 22:00pm

    Theydon Bois Scout Hall, Epping, CM16 7EJ (11.4 miles away)

    More info

  • Bayfordbury Observatory guided astronomy evening

    Friday 17th April 2026 from 18:00pm to 20:00pm

    Bayfordbury Observatory, Bayfordbury, SG13 8LD (1.7 miles away)

    More info

  • Cambridge Astronomical Association speaker meeting

    Friday 17th April 2026 from 20:00pm to 21:30pm

    Cambridge Observatory - Institute of Astronomy, Cambridge, CB3 0HA (29.9 miles away)

    More info

  • North East London Astronomical Society meeting

    Sunday 19th April 2026 from 13:30pm to 16:30pm

    Wanstead House, Wanstead, E11 2NT (16.0 miles away)

    More info

Stay and gaze nearby

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