Paul Eggert <eggert@cs.ucla.edu> writes:
As zefram mentioned, your best bet might be to look at tzdata.zi, which contains all the data for all the entries in zone1970.tab. You can get the current released version here:
Perhaps veering a bit from the thread topic, but: would it be reasonable to request that that file contain some version-identifying info? Ideal from my standpoint would be a tz release number, eg # This zic input file is in the public domain. # Zone data as of tzdata2017c. R A 1916 o - Jun 14 23s 1 S R A 1916 1919 - O Sun>=1 23s 0 - R A 1917 o - Mar 24 23s 1 S but if that's hard, a date would do. The body of the file is sufficiently not-human-readable that it's hard to identify what you're dealing with if you don't already know. regards, tom lane