Telescopes for beginners | free mobile app | Smart telescopes

Therfield Heath

Therfield Heath

Therfield Road, Royston , Hertfordshire, SG8 9NW, East of England England

Best time to visit

Public venue - public location used for stargazing events.

Weather forecast

  • 04/09/26

    20° 5%

  • 04/09/26

    20° 5%

  • 04/09/26

    18° 0%

  • 05/09/26

    15° 0%

Weather forecast for Letchworth Garden City (8.2 miles away) updated 04/09/26 at 06:01. Powered by Met Office data.

Local light pollution

Therfield Heath is estimated to have light pollution levels similar to a semi-rural 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 Therfield Heath

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 Fri 4th Sep

Fri 4th Sep

Third Quarter
54 % illuminated
Dark from 19:59 to 21:28
Dark for 1h 28m
Moon phase on Sat 5th Sep

Sat 5th Sep

Third Quarter
42 % illuminated
Dark from 19:56 to 22:34
Dark for 2h 37m
Moon phase on Sun 6th Sep

Sun 6th Sep

Third Quarter
31 % illuminated
Dark from 19:53 to 23:56
Dark for 4h 2m
Moon phase on Mon 7th Sep

Mon 7th Sep

Waning Crescent
21 % illuminated
Dark from 19:51 to 01:26
Dark for 5h 34m
Moon phase on Tue 8th Sep

Tue 8th Sep

Waning Crescent
12 % illuminated
Dark from 19:48 to 02:56
Dark for 7h 7m
Moon phase on Wed 9th Sep

Wed 9th Sep

Waning Crescent
6 % illuminated
Dark from 19:46 to 04:10
Dark for 8h 23m
Moon phase on Thu 10th Sep

Thu 10th Sep

New Moon
2 % illuminated
Dark from 19:43 to 04:12
Dark for 8h 28m

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

  • Nene Valley Astronomical Society observing evening (weather permitting)

    Friday 4th September 2026 from 20:00pm to 23:00pm

    Chelveston Village Hall, Chelveston, NN9 6AT (28.3 miles away)

    More info

  • Cambridge AstroPlus

    Monday 7th September 2026 from 19:15pm to 20:45pm

    Cambridge Observatory - Institute of Astronomy, Cambridge, CB3 0HA (13.7 miles away)

    More info

  • St Neots Astronomy Association observing evening

    Monday 7th September 2026 from 19:30pm to 21:30pm

    Paxton Pits Nature Reserve, Little Paxton, PE19 6ET (17.0 miles away)

    More info

  • Nene Valley Astronomical Society informal club night

    Monday 7th September 2026 from 20:00pm to 22:00pm

    Chelveston Village Hall, Chelveston, NN9 6AT (28.3 miles away)

    More info

  • Thaxted Astronomical Society club meeting

    Wednesday 9th September 2026 from 20:00pm to 22:00pm

    The Swan - Thaxted, Thaxted, CM6 2PL (17.7 miles away)

    More info

Stay and gaze nearby

Stay at one of these stargazing-friendly accommodation providers.

No locations found