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Diffstat (limited to 'contrib/tzdata/factory')
| -rw-r--r-- | contrib/tzdata/factory | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/contrib/tzdata/factory b/contrib/tzdata/factory index d116a115990e..14faf52a792e 100644 --- a/contrib/tzdata/factory +++ b/contrib/tzdata/factory @@ -8,5 +8,15 @@ # time zone abbreviation "-00", indicating that the actual time zone # is unknown. +# TZ="Factory" was added to TZDB in 1989, and in 2016 its abbreviation +# was changed to "-00" from a longish English-language error message. +# Around 2010, CLDR added "Etc/Unknown" for use with TZDB, to stand +# for an unknown or invalid time zone. These two notions differ: +# TZ="Factory" is a valid timezone, so tzalloc("Factory") succeeds, whereas +# TZ="Etc/Unknown" is invalid and tzalloc("Etc/Unknown") fails. +# Also, a downstream distributor could modify Factory to be a +# default timezone suitable for the devices it manufactures, +# whereas that cannot happen for Etc/Unknown. + # Zone NAME STDOFF RULES FORMAT Zone Factory 0 - "Local time zone must be set--use tzsetup" |