Thanks for your reply. However, all check got me nowhere and it was
obvioous that the Nest had developed a fault. Google Support resisted
for a long time (5 hours on the phone) but finally acceoted my request
for a replacement under warranty. Replace...
My Google Nest 3 is connected to WiFi, and the Nesty app on my iPad with
the correct date and location (UK and Post code correct) BUT shows the
time as GMT and not the current BST.This means my schedule is always one
hour late. Short of changing time...