At 6:15 pm your time, the +2 should match.
It has to do with `find` rounding and disposing of time periods not equal to or greater than a full
24 hour period (i.e fractional 24 hour periods are discarded).
From the man page:
File was last accessed n*24 hours ago. When find figures out how many 24-hour periods ago the file was last accessed, any fractional
part is ignored, so to match -atime +1, a file has to have been accessed at least two days ago.
The same as above applies to -mtime. So, to match +2, the file must have been modified 3 whole
days ago; at this time, it's been accessed about 2.75 days ago.