Emoncms considers end of day to be in middle of day

Just installed a complete fresh copy of emonSD-13Jun18.img. All went fine except that the My Electric app changes over the day accumulation at about 11.30am instead of midnight!

Is there a way to fix this?

As a matter of interest, what timezone are you in?

London… but I haven’t changed the timezone (if indeed you can!) from the install.