The Chatham Islands are an Island group, two of which are inhabited (Chatham Island and Pitt Island).

https://en.wikipedia.org/wiki/Chatham_Islands

Right now is it on +13:45 due to Daylight Saving

https://en.wikipedia.org/wiki/Chatham_Standard_Time_Zone

or along the highway near the Western Australia/South Australia border, which informally uses +8:45 https://en.wikipedia.org/wiki/UTC%2B08:45

RealLifeLore just had a video about time zones in that area of the world, there's an area between New Zealand and Hawaii where you can go north/south and jump an entire day.

Nepal is UTC+5:45. I think that's the largest population on a 15/45 minute offset.