The time on Windows phones is set in one of three ways. Either you can set it manually, or it will try to get the time from your service provider (the network, not the reseller). Unfortunately, O2 are a bit of an oddball network in that they do not provide a time feed. This used to mean (on older versions of WP8) that manual was the only way, but now when the phone cannot get a time from your service provider it syncs with the MS NTP servers (time servers) over the internet much like your desktop PC.
Is your language and region set right? Have you selected the 'Set timezone automatically' option? If not, try doing so. If you have set this, try turning it off and manually setting your timezone.
This may, of course, be a temporary issue with the MS time server but I have not seen this issue on my PCs (I'm UK too) so I doubt it.
06-08-2017 07:11 AM