Something took our hosting provider down on Sunday 16th. A bit after 3pm access became very sluggish, and about an hour later the website went down. The hosting provider's support system also went down, so I assume whatever caused the trouble was affecting the entire hosting system. It was down for about four hours. Hopefully it's now back and working...
(http://gallery.orpington-astronomy.org.uk/albums/userpics/10004/daily-oas-20170716.png)