diff options
Diffstat (limited to 'zic.8')
| -rw-r--r-- | zic.8 | 17 |
1 files changed, 10 insertions, 7 deletions
@@ -1,6 +1,6 @@ .\" This file is in the public domain, so clarified as of .\" 2009-05-17 by Arthur David Olson. -.TH zic 8 +.TH zic 8 "" "Time Zone Database" .SH NAME zic \- timezone compiler .SH SYNOPSIS @@ -121,7 +121,10 @@ will act as if the input contained a link line of the form .ti +.5i Link \fItimezone\fP posixrules .sp -This feature is obsolete and poorly supported. +Unless +.I timezone is +.q "\*-" , +this option is obsolete and poorly supported. Among other things it should not be used for timestamps after the year 2037, and it should not be combined with .B "\*-b slim" @@ -145,7 +148,7 @@ to timestamps in the range from .I lo and .I hi -are possibly-signed decimal counts of seconds since the Epoch +are possibly signed decimal counts of seconds since the Epoch (1970-01-01 00:00:00 UTC). Omitted counts default to extreme values. The output files use UT offset 0 and abbreviation @@ -242,10 +245,10 @@ for .PP The output file does not contain all the information about the long-term future of a timezone, because the future cannot be summarized as -an extended POSIX TZ string. For example, as of 2019 this problem -occurs for Iran's daylight-saving rules for the predicted future, as -these rules are based on the Iranian calendar, which cannot be -represented. +an extended POSIX TZ string. For example, as of 2023 this problem +occurs for Morocco's daylight-saving rules, as these rules are based +on predictions for when Ramadan will be observed, something that +an extended POSIX TZ string cannot represent. .PP The output contains data that may not be handled properly by client code designed for older |