when.events is a website collecting event and CfP dates. Currently, you can add events by submitting them to the when.events API, but manual event addition is planned for a later date.
To submit an event, gather all relevant event metadata in the following format (which is inspired by past experience and https://schema.org/Event), and put it online in a stable location:
{TBD}
Then send a POST request with your URL to the when.events API:
curl --TBD
when.events will then retrieve the data and will continue to periodically check for updates.
This is a project by Tobias 'rixx' Kunze.