Obsidian not reading system clock correctly

I am starting off learning about templates using templater to create a date stamp template. I have run the date template on a WIndows computer, and a linked vault on a MacOS. On the Mac, the date is five hours ahead. check to see whether it is reading GMT, but the result is one hour earlier than GMT. I checked my Mac’s settings and the clock is set to the correct time zone, and time. Any suggestions?

Also, I read the Bug Report forum standard instructions where it say the issue should be tried in ‘the’ Sandbox before submitting to the Bug forum; where is a can I find a sandbox? Do I create this, locally, myself?

Thank you in advance