Was curious if anyone had calculated the number of days between two dates? Or know how to do it? Just want Alexa to announce the number of days til a specific event?

Have you tried "Alexa, how many days until April 15?" Siri does all of those calculations.

Or, these two actions in Rule Machine set a local variable to the number of days between two DateTime Hub Variables.

BTW, it happens to be 178 days from today until April 15, an answer found in those actions as well as given by Siri (I retired all of my Echos).

Just for fun I backed both dates up by a year to catch Leap Year.

The times in those variables are completely useless for this case, and could be removed for better clarity:

I'll give that a try. I don't want to have to ask alexa. Currently my "Goodnight" routine checks for doors and locks etc.. (via hubitat) and makes announcements if anything is open or not etc.. I just want to add this capability to this routine.

Thank You!

This did it rather easily. Dorry about my ignorance of datetime as a variable type. I appreciate the help.