iso8601 - Man Page

Part of the Pacemaker cluster resource manager


iso8601 <command> [options]


iso8601 - display and parse ISO 8601 dates and times


-?,  --help

This text

-$,  --version

Version information

-V,  --verbose

Increase debug output


-n,  --now

Display the current date/time

-d,  --date=value

Parse an ISO 8601 date/time (for example, '2019-09-24 00:30:00 +01:00' or '2019-040')

-p,  --period=value

Parse an ISO 8601 period (interval) with start time (for example, '2005-040/2005-043')

-D,  --duration=value

Parse an ISO 8601 duration (for example, 'P1M')

-E,  --expected=value

Exit with error status if result does not match this text. Requires: -n or -d

Output Modifiers

-s,  --seconds

Show result as a seconds since 0000-001 00:00:00Z

-S,  --epoch

Show result as a seconds since EPOCH (1970-001 00:00:00Z)

-L,  --local

Show result as a 'local' date/time

-O,  --ordinal

Show result as an 'ordinal' date/time

-W,  --week

Show result as an 'calendar week' date/time

For more information on the ISO 8601 standard, see


Written by Andrew Beekhof

Reporting Bugs

Report bugs to


March 2021 Pacemaker 2.0.5-10.fc35.2 System Administration Utilities