I was not sure how timestamps were saved in the FAT32 file system, so I did a google search.
how are timestamps stored in FAT file system
This is probably as close to a “canonical source” as you can get. And it also says FAT timestamps are “local time”.
https://msdn.microsoft.com/en-us/enus/library/windows/desktop/ms724290(v=vs.85).aspx “File Times”
So if the timestamps that the Wyze is using are UTC, then it will be confusing. UTC does have benefits, especially when time zone can’t be stored, or you want to be able to correlate times between multiple sources. But most people will expect the timestamps to be the same as is displayed on their clocks.
Other links if you are interested:
Filesystem Timestamps: What Makes Them Tick?
Windows and Unix/Linux handle the effect of DST (daylight saving time) on time stamps differently
Why do file timestamps compare differently every time change?
A Forensic Comparison of NTFS and FAT32 File Systems