[tz] Astrakhan region got approval to change its time zone
eggert at cs.ucla.edu
Sun Feb 14 23:42:59 UTC 2016
> I meant D as in the military name of UTC+04, not daylight.
Ah, sorry, I misunderstood.
Single-letter names are too short to conform to POSIX (which requires at least 3
characters). Also, they are problematic on the net because Internet RFC 822 got
them wrong (the sign was reversed). For this reason RFC 1123 says they "carry no
information" in email Date: lines, and RFC 5322 says something similar. Also,
single-letter names can't handle UTC offsets like +1400 and +0530 that are in
practical use today. With all these problems I think we can safely exclude them
from our bag of tricks.
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