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This plugin is inspired by the WordPress TimeSince plugin. It which can be used to display a time difference in a human readable way, for instance to tell you that a topic has been published "2 days, 3 hours ago".

There are some problems with the original TimeSince plugin for WordPress. For example, it was only able to display a time diff with at most two expressions: "1day, 2hours ago" or "1 week ago" but not "1 day, 2 hours and 3 minutes". It even displays only one time expression if the difference does not occure in two adjacent time units (time units are year, month, week, day, hour, minute). If a time interval differs in week and hour the TimeSince WP plugin will only display the week difference and not the hours as week and hour are not adjacent. This is fixed in the TimeSincePlugin for TWiki. Several other parameters have been added to give a finer control of the format and the information displayed.

Syntax Rules

%TIMESINCE%, %TIMESINCE{[[from]="..."] [to="..."]}%

Without arguments the time since the current topic has been created will be displayed.

Argument Description
from="<time-experssion>" the starting time point, if ommited the current time
to="<time-expression>" the ending timepoint, if ommited the current time
units="1...7" number of time units to display, default 2; (example units="3": 2 months, 1 day and 3 minutes)
seconds="on,off" switch on/off second precision
null="<format-string>" to be displayed if the tim difference is null; defaults to "about now"
format="<format-string>" format of the output, defaults to "$time", other usefull settings format="$time ago", format="replied $time later", "format="$time after the incident"

Time expressions can be specified in any of the following format:

  • 31 Dec 2001 - 23:59 (TWiki date)
  • 31 Dec 2001
  • 2001/12/31 23:59:59 (RCS date)
    also -, . instead of / in date, also . instead : in time
  • 2001/12/31 23:59
  • 2001/12/31
  • 2001-12-31T23:59:59Z (ISO date)
  • 2001-12-31T23:59:59+01:00
  • 2001-12-31T23:59Z
  • 2001-12-31T23:59+01:00
  • epoch seconds

Format strings may contain the following:

  • $time expands to the calculated time difference
  • $percnt$ expands to a % char
  • $dollar$ expands to a $ char
  • $n expands to a linefeed
  • $t expands to a tab space
  • $nop expands to the empty string


You type You get (simulated) You get (if installed)
%TIMESINCE% 1 day, 3 hours 6 years, 1 month
%TIMESINCE{format="topic was created $time ago" null="topic has just now been saved" units="4" }% topic was created 1 day, 3 hours, 8 minutes ago topic was created 6 years, 1 month, 2 days, 9 hours ago
%TIMESINCE{"11 Sep 2001 - 8:45" units="7" seconds="on"}% 4 years, 2 months, 2 days, 5 hours, 50 minutes, 16 seconds 10 years, 7 months, 5 days, 14 hours, 45 minutes, 43 seconds
%TIMESINCE{from="1955/04/18" to="1979-03-14" units="3"}% 23 years, 11 months, 6 days 23 years, 11 months, 6 days

Plugin Settings

  • Set SHORTDESCRIPTION = Display time difference in a human readable way.

Plugin Installation Instructions

  • Download the ZIP file from the Plugin web (see below)
  • Unzip TimeSincePlugin.zip in your twiki installation directory. Content:
    File: Description:
    data/TWiki/TimeSincePlugin.txt Plugin topic
    lib/TWiki/Plugins/TimeSincePlugin.pm Plugin Perl module

Plugin Info

Plugin Author: TWiki:Main.MichaelDaum
Copyright ©: 2005-2006, Michael Daum
License: GPL (GNU General Public License)
Plugin Version: v0.99
Change History:  
11 Nov 2005: Initial version
TWiki Dependency: $TWiki::Plugins::VERSION 1.1
CPAN Dependencies: CPAN:Time::Local
Other Dependencies: none
Perl Version: 5.005
Benchmarks: GoodStyle nn%, FormattedSearch nn%, TimeSincePlugin nn%
Plugin Home: TWiki:Plugins/TimeSincePlugin
Feedback: TWiki:Plugins/TimeSincePluginDev
Appraisal: TWiki:Plugins/TimeSincePluginAppraisal

-- TWiki:Main.MichaelDaum - 11 Nov 2005

r2 - 2006-03-12 - 12:25:08 - TWikiAdminGroup
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