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Age of the universe has changed. Please update. — Preceding unsigned comment added by 2601:581:C000:CA60:E10A:F3E4:D435:8600 ( talk) 19:22, 16 January 2020 (UTC)
The last sentence of the 1st paragraph states: "Due to this treatment, Unix time is not a true representation of UTC."
However, the previous statements and examples underneath indicate that Unix time maps directly to UTC: At any midnight, Unix time is always an integer multiple of 86,400 seconds - which UTC reflects. Unix time and UTC are both adjusted during a leap second event, in the same way by effectively "holding" for a second. In that sense, Unix directly represents UTC.
It would be consistent to delete the word "not" from that confusing sentence, and thus state: "Due to this treatment, Unix time is a true representation of UTC."
Thanks.
Tim Atkins — Preceding unsigned comment added by 156.68.237.132 ( talk) 23:22, 29 May 2020 (UTC)
Guy, thanks for the response. I understand your point here, which is of course valid. When I read the subject sentence I was thinking in context of absolute timescales such as TAI. During the transition you described, Unix time should be considered undefined or invalid; certainly any implementation of Unix time during that transition needs special handling or interpretation. However, apart from these leap-second events, conversion between a UTC representation and its Unix representation is constant; that was my main point. Thanks for clarifying the important exception! — Preceding unsigned comment added by 156.68.234.7 ( talk) 22:55, 30 May 2020 (UTC)
In JavaScript, the year that can be entered as a Date object is -271821 to 275760 years, and an error occurs when the year exceeds 275760.-- 58.236.219.11 ( talk) 09:15, 18 October 2020 (UTC)
This page is an archive of past discussions. Do not edit the contents of this page. If you wish to start a new discussion or revive an old one, please do so on the current talk page. |
Age of the universe has changed. Please update. — Preceding unsigned comment added by 2601:581:C000:CA60:E10A:F3E4:D435:8600 ( talk) 19:22, 16 January 2020 (UTC)
The last sentence of the 1st paragraph states: "Due to this treatment, Unix time is not a true representation of UTC."
However, the previous statements and examples underneath indicate that Unix time maps directly to UTC: At any midnight, Unix time is always an integer multiple of 86,400 seconds - which UTC reflects. Unix time and UTC are both adjusted during a leap second event, in the same way by effectively "holding" for a second. In that sense, Unix directly represents UTC.
It would be consistent to delete the word "not" from that confusing sentence, and thus state: "Due to this treatment, Unix time is a true representation of UTC."
Thanks.
Tim Atkins — Preceding unsigned comment added by 156.68.237.132 ( talk) 23:22, 29 May 2020 (UTC)
Guy, thanks for the response. I understand your point here, which is of course valid. When I read the subject sentence I was thinking in context of absolute timescales such as TAI. During the transition you described, Unix time should be considered undefined or invalid; certainly any implementation of Unix time during that transition needs special handling or interpretation. However, apart from these leap-second events, conversion between a UTC representation and its Unix representation is constant; that was my main point. Thanks for clarifying the important exception! — Preceding unsigned comment added by 156.68.234.7 ( talk) 22:55, 30 May 2020 (UTC)
In JavaScript, the year that can be entered as a Date object is -271821 to 275760 years, and an error occurs when the year exceeds 275760.-- 58.236.219.11 ( talk) 09:15, 18 October 2020 (UTC)