Hi Gary,
This is a known issue with Photo Mechanic's time variable, {time}, on Sonoma. There are 2 solutions until this problem is fixed.
If you want to use the 12 hour time, then use {time:0,8} {time:-2,2} in place of the existing {time} variable. This will leave a comma after the second, for the single digit hours.
If you want to use the 24 hour time, then use the following variables {h24}:{min}:{sec} in place of the existing {time} variable.
Best regards,
--Bob