Ubuntu Manpage: undertime - pick a meeting time

NAME

       undertime - pick a meeting time

SYNOPSIS

       undertime      [--start      HOUR]      [--end     HOUR]     [--date     WHEN]     [--colors|--no-colors]
       [--default-zone--no-default-zone] [--config FILE ] [timezones]
       undertime --print-zones

DESCRIPTION

undertime is a program that allows you to quickly pick a meeting time across multiple timezones for
conference calls or other coordinated events. It shows all times of a given day for all the timezones
selected, in a table that aligns the time so a line shows simultaneous times across all timezones. This
takes into account daylight savings and other peculiarities (provided that the local timezone database is
up to date) so you can also schedule meetings in the future as well.

An educated guess is made to find the relevant timezones: the local timezone is first guessed and added
to the list, then the arguments on the commandline are looked up in the internal timezone database.
Spaces in arguments are replaced by underscores and all-caps versions of lowercase strings are tried as
well. When failing to match a provided timezone against the internal list, a warning is emitted. A
complete list of timezones is shown when the --print-zones commandline option is provided.

Colors are used to highlight the "work hours" where possible meeting times could overlap and the current
time is marked in bold. Colors are replaced by an underscore suffix and the current time by a star if
colors are disabled. You can change those work hours with the --start and --end flags. Because daylight
savings may actually change time, you can also use the --date time to pick an arbitrary time for the
meeting, using natural language (as parsed by the parsedatetime library). The current time is also shown,
in bold.

OPTIONS

       --start HOUR, -s HOUR
              start of working day, in hours

       --end HOUR, -e HOUR
              end of working day, in hours

       --date WHEN, -d WHEN
              target date for the meeting, supports arbitrary dates like "in two weeks"

       --colors, --no-colors
              show colors. enabled by default if output is a terminal.

       --default-zone, --no-default-zone
              show current timezone first

       --print-zones
              show valid timezones and exit

       --config FILE
              load YAML config FILE as defaults.

       -h, --help
              Show summary of options and defaults

ENVIRONMENT

       TZ     Default timezone.

       NO_COLOR
              If  this  environment  variable  is  defined,  no  color will be shown unless the --colors flag is
              passed. Comforming to NO_COLOR informal standard ⟨http://no-color.org/⟩

FILES

       ~/.config/undertime.yml $XDG_CONFIG_DIR/undertime.yml
              The configuration file loaded by default, if present. The configuration file  is  formatted  as  a
              YAML  dictionary,  where  keys are the long option names (without dashes) and the values are their
              values. Comments start with the # character. Options provided as arguments override  the  defaults
              set in the configuration file, particularly timezones. For example, this means timezones specified
              in  the  configuration  file  are  ignored  ignored when also specified as arguments. The --config
              parameter allows you to load another configuration file, on top of the default one, using the same
              logic, allowing you to have multiple "presets".

EXAMPLE

   Command line options
       undertime "New York" "Los Angeles" Paris
              Display possible meeting times for three major cities.

       undertime -s 8 -e 18 --date 2014-03-15
              Show a longer work day in march 2014.

   Configuration file
       Set the above timezones as default:
              timezones: [US/Central, US/Pacific, Europe/Paris]

       Set the work day to be between 10 and 1800 hours:
              start: 10
              end: 18

       Disable colors:
              colors: false