Date of an event in segment


Hey guys,
we are using matomo to track and monitor what is happening in our app. But there is one KPI I want to be aware of: How old our app users are and/or how often they use our app an a given time.

I thought, the best way to achieve is to set a segment with this parameters:
Install Event on a given date and then set the time range to see, how long our users who installed on this day are active. I expect to see less and less usage as time goes by.

But: I cannot set a date inside of a segment. So see users, who fired an event on a specific day. So my question: is there a workaroud to achieve this?

Thanks in advance!