Dark Skies Festival 2026 - Biofluorescent Night Walks at Seven Sisters
Thursday 12th February 2026 from 19:45pm to 21:15pm
Seven Sisters Country Park
Exceat, Seaford, East Sussex, BN25 4AD
Discover the hidden, glowing world of biofluorescence on a guided night walk led by expert David Atthowe of Reveal Nature. With UV torches provided, explore how plants, spiders, lichens and more light up in vivid colours, revealing a secret side of nature after dark. Suitable for ages 8+ (children must be accompanied), with safety glasses provided—wrap up warm, wear sturdy shoes and trousers, and prepare for an unforgettable after-dark adventure.
This event takes place as part of the South Downs Dark Skies Festival 2026.
Please note that this has already taken place on 12/02/2026
Event organiser
South Downs National Park is organising this event
Please contact South Downs National Park directly for more details regarding this event or, if appropriate, contact the event venue.
Email: [email protected]
Website: South Downs National Park
Twitter: @sdnpa
Facebook: South Downs National Park
Event booking
Event darkness
The below chart shows if and when the skies will be at their darkest during this event. 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.
Thu 12th Feb
Local light pollution
Seven Sisters Country Park is estimated to have light pollution levels similar to a rural location based on the latest data from the VIIRS satellite. For more advanced light pollution data, view this location on DarkSkySites.
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Urban
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Suburban
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Semi-rural
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Rural
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Dark site
The above demonstrates the estimated effect of light pollution - graphics created using Stellarium.