April 11, 2013
5:33 p.m.
There is a use case to change them back to the introduction of daylight saving time if it is judged that that that has been the preferred abbreviation since that time. For the same reasons as going forward, a tool (such as a calendar) which reports past daylight saving time events remains ambigious for past dates if the abbreviations are not put into the database retroactively. I don't think its the responsibility of tz to report what tz did in the past - but to represent what was in common use in the past. On 2013-04-11 12:53, Dennis Ferguson wrote:
Is there a reason to change the historical TZ database abbreviations rather than just making a change which is applied going forward?
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