1Usage: dateconv [OPTION]... [DATE/TIME]... 2 3Convert DATE/TIMEs between calendrical systems. 4If DATE/TIME is omitted date/times are read from stdin. 5 6DATE/TIME can also be one of the following specials 7 - `now' interpreted as the current (UTC) time stamp 8 - `time' the time part of the current (UTC) time stamp 9 - `today' the current date (according to UTC) 10 - `tomo[rrow]' tomorrow's date (according to UTC) 11 - `y[ester]day' yesterday's date (according to UTC) 12 13 14 -h, --help Print help and exit 15 -V, --version Print version and exit 16 -q, --quiet Suppress message about date/time and duration 17 parser errors and fix-ups. 18 The default is to print a warning or the 19 fixed up value and return error code 2. 20 -f, --format=STRING Output format. This can either be a specifier 21 string (similar to strftime()'s FMT) or the name 22 of a calendar. 23 -i, --input-format=STRING... Input format, can be used multiple times. 24 Each date/time will be passed to the input 25 format parsers in the order they are given, if a 26 date/time can be read successfully with a given 27 input format specifier string, that value will 28 be used. 29 -b, --base=DT For underspecified input use DT as a fallback to 30 fill in missing fields. Also used for ambiguous 31 format specifiers to position their range on the 32 absolute time line. 33 Must be a date/time in ISO8601 format. 34 If omitted defaults to the current date/time. 35 -e, --backslash-escapes Enable interpretation of backslash escapes in the 36 output and input format specifier strings. 37 -S, --sed-mode Copy parts from the input before and after a 38 matching date/time. 39 Note that all occurrences of date/times within a 40 line will be processed. 41 --locale=LOCALE Format results according to LOCALE, this would only 42 affect month and weekday names. 43 --from-locale=LOCALE Interpret dates on stdin or the command line as 44 coming from the locale LOCALE, this would only 45 affect month and weekday names as input formats 46 have to be specified explicitly. 47 --from-zone=ZONE Interpret dates on stdin or the command line as 48 coming from the time zone ZONE. 49 -z, --zone=ZONE Convert dates printed on stdout to time zone ZONE, 50 default: UTC. 51