Duplicati’s JSON HTTP reports have a very unconventional reporting formation for the duration (at least on FR-CA, which is known to be problematic right now).
If a backup lasts over a day, the report’s duration will have an unconventional time format: 1.13:23:59.1679094
Changing the format of this time would be a major compatibility issue, but I believe in a future version, following ISO8601 standard for time durations (although I’ve frankly never seen anyone use this) could be nice. So the above time would become PT37H23M59.1679094S - using days, weeks or months for a duration can result in bugs with daylight savings times or shorter months, so overflowing the hours is fine (and part of the spec).
Otherwise, just having a time where the hour can go over 24 could work, although once again unconventional (such as 37:23:59.1679094) and still a breaking change.
Thoughts?