How to ensure correct timezone?

Hi I’m using a wp7702 and I’m aware it does not have an RTC for some reason. My time is mostly correct but sometimes it’s like a day out for example right now its reading “Thu Jul 11 21:13:43 2019”
but my time zone in New Zealand it is Fri Jul 12 9:16:xx 2019 is there a way to fix the timezone for this as the time is pretty important for what I am trying to achieve. Its even more annoying that it won’t stay in a constant timezone.

Thank you

Oh sorry it seems to be set off my host PC but why does it keep this timezone even when it reboots?