POSIX timezone definition converter

What type of request is this?

New tool idea

Clear and concise description of the feature you are proposing

Please add POSIX timezone definition converter/or list, is missing.

Example: Europe/Berlin: CET-1CEST,M3.5.0,M10.5.0/3 Europe/Bucharest: EET-2EEST,M3.5.0/3,M10.5.0/4 Europe/London: GMT0BST,M3.5.0/1,M10.5.0

Is their example of this tool in the wild?

TimeZoneConverter Posix

Timezone Id to POSIX format mapping

Additional context

No response

Validations

• Check the feature is not already implemented in the project.
• Check that there isn't already an issue that request the same feature to avoid creating a duplicate.
• Check that the feature can be implemented in a client side only app (IT-Tools is client side only, no server).