Firestore query by date range

Question

I need the help to query long collection with date range. See the below example document. I wanna query startTime field using date range.

Answer 1

You could store the datetime object as Unix time (seconds since 1 January 1970). Then you can simple use the where select like this:

collectionRef.where("startTime", ">=", "1506816000").where("startTime", "<=", "1507593600")

Btw - to convert from datetime to Unix time in your app, you can use the excellent library moment (if you are building something with js or node).