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Usage: dateconv [OPTION]... [DATE/TIME]...
Convert DATE/TIMEs between calendrical systems.
If DATE/TIME is omitted date/times are read from stdin.
DATE/TIME can also be one of the following specials
- `now' interpreted as the current (UTC) time stamp
- `time' the time part of the current (UTC) time stamp
- `today' the current date (according to UTC)
- `tomo[rrow]' tomorrow's date (according to UTC)
- `y[ester]day' yesterday's date (according to UTC)
-h, --help Print help and exit
-V, --version Print version and exit
-q, --quiet Suppress message about date/time and duration
parser errors and fix-ups.
The default is to print a warning or the
fixed up value and return error code 2.
-f, --format=STRING Output format. This can either be a specifier
string (similar to strftime()'s FMT) or the name
of a calendar.
-i, --input-format=STRING... Input format, can be used multiple times.
Each date/time will be passed to the input
format parsers in the order they are given, if a
date/time can be read successfully with a given
input format specifier string, that value will
be used.
-b, --base=DT For underspecified input use DT as a fallback to
fill in missing fields. Also used for ambiguous
format specifiers to position their range on the
absolute time line.
Must be a date/time in ISO8601 format.
If omitted defaults to the current date/time.
-e, --backslash-escapes Enable interpretation of backslash escapes in the
output and input format specifier strings.
-S, --sed-mode Copy parts from the input before and after a
matching date/time.
Note that all occurrences of date/times within a
line will be processed.
--locale=LOCALE Format results according to LOCALE, this would only
affect month and weekday names.
--from-locale=LOCALE Interpret dates on stdin or the command line as
coming from the locale LOCALE, this would only
affect month and weekday names as input formats
have to be specified explicitly.
--from-zone=ZONE Interpret dates on stdin or the command line as
coming from the time zone ZONE.
-z, --zone=ZONE Convert dates printed on stdout to time zone ZONE,
default: UTC.
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