Firebase endAt() not working with date string?

Question

Pretty basic question in here

My Stored Date String is like this in Firebase DB

23-Oct-2016 07:00:11 AM

Now i am firing this query

Answer 1

Storing dates and times as readable strings like you seem to be doing is guaranteed to give you a hard time. Strings are lexicographically ordered, while you typically want to treat dates as chronologically ordered. The two orders don't always match up.

The best way to store a date/time for querying is as a simple timestamp: the number of milliseconds since the UNIX epoch.

If you insist on storing the dates and times as more readable string, your better of storing them in a format that is both readable and will sort the same in both lexicographical and chronological order, such as the ISO 8601 formats: 20161023T150422. This is the current time as I type this: October 23, 2016 3:04 PM UTC.