Outside of SharpTools, maybe. Within SharpTools, the calendar is only exposed for display on dashboards. There’s a feature request for being able to use calendar events directly within rules if you want to cast a vote and perhaps reply with your use-case to bump the thread:
As noted in the linked feature request, some people were using IFTTT to do this. As far as I’m aware, you can still use IFTTT to do it, but you’re limited on the total number of free ‘applets’