Can someone recommend a calendar program?

[bitsnpcs]

There is a Thunderbird Add-on named Lightning that is a calendar.

Here is the link for the tutorial of how to set bi weekly events to Lightning -

https://support.mozilla.org/en-US/kb/cre...ring-event

This is about configuring it and also set Alarms

https://support.mozilla.org/en-US/kb/con...-lightning

The search at the top of the link page will find other tutorials for Lightning.