calendar-timezones software package provides Timezone Extension for Lightning/Iceowl (mandatory), you can install in your Debian 7 (Wheezy) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install calendar-timezones
calendar-timezones is installed in your system.
Make ensure the calendar-timezones package were installed using the commands given below,
$ sudo dpkg-query -l | grep calendar-timezones *
You will get with calendar-timezones package name, version, architecture and description in a table
| Distro | Debian 7 wheezy |
| Section | |
| Package | calendar-timezones |
| Version | 17.0.10-1~deb7u1 |
| Description | Timezone Extension for Lightning/Iceowl (mandatory) |
| Sub Section |