The monument field has to be cleared by 8am so that the site can be tidied up and put back to normal in time for it to re-open to regular visitors by about 3pm on the 21st.”

So everyone must clear off 2 hours 13 minutes before the actual Solstice at 10.13 am ?! So whose monument and whose Solstice is it?

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Update 18/6/2022

English Heritage has answered the question now, sort of:

“WHY ISN’T IT LATER?
The sunrise immediately before summer solstice – when the days gradually start to get shorter – is the moment traditionally marked at Stonehenge, and our live coverage replicates this.”

Hardly the point. People worldwide will be tuning in at the moment of their solstice – which is 10.13 am UK time – when the video coverage will be blank and everyone will have been told to leave.