4 ms·
UTC just provides a labeling for TAI/TT seconds, so a count-of-UTC-seconds timestamp is identical to a count-of-TAI-seconds timestamp (assuming the same epoch).
by arielby 12y ago
UTC just provides a labeling for TAI/TT seconds, so a count-of-UTC-seconds timestamp is identical to a count-of-TAI-seconds timestamp (assuming the same epoch). Both are different from a count-of-non-leap-UTC-seconds aka POSIX time.
- taejo 12y agoYes, but we don't know what that labeling will be in the future.
- laut 12y agoYou cannot know for sure how many leap seconds there will be in for instance the next 5 years. So you cannot know for sure exactly how many seconds there will elapse from now until for instance July 1st 2020 midnight UTC.