It not at all clear what day 7 is. Originally the day of positive test or symptoms was day 0, so (as it still says on govt website) if you tested positive on 15th you ended isolation at 23.59 on 25th. Our positive person tested positive on 22nd, and T&T have told her day 7 is 28th, which is the seventh day which means that the first day is now day 1.
The government website is as clear as mud. Does anyone know what is correct? I have googled extensively and it just says 7 days but doesn't clarify whether you start on day 0 or day 1. If anyone can point me to a reliable source rather than their interpretation I would be very grateful.