The partial eclipse will occur on August 12 between 6.17pm and 8.06pm with astronomers saying this will be the most dramatic since the total eclipse of 1999, with up to 95 per cent of the sun will be obscured by the moon. RECOMMENDED READING:The eclipse happens close to sunset when the Sun is just 12° above the horizon. Imo Bell, a planetarium astronomer at the Royal Greenwich Observatory, said: "It's not a total eclipse, but over 90 per cent is really exciting. There will also be a short talk on eclipses by astrophysicist Dr Emily Brunsden from 6.15pm to 6.45pm, followed by safe eclipse viewing from 6.45pm to 7.30pm using specialist solar telescopes and solar glasses. The next time the UK will see a similar level of solar coverage will be in 2081, with the next total solar eclipse over UK skies not expected until 2090.