How do I get a server timestamp from Firebase's iOS API?

Question

I have an iOS app that uses Firebase and currently has a few dictionaries with keys that are NSDate objects. The obvious issue with this is that NSDate draws from the devic

Answer 1

You can get Time Stamp using FIRServerValue.timestamp().

But, Because of FIRServerValue.timestamp() listener is called two times. Listener will be called two times.