niceseb  
              
                  
                    September 1, 2016,  5:52pm
                   
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              This is my DateTime:
'2016-09-01 12:00:00'
how to randomize +/-15 mins before I save into MongodB
'2016-09-01 12:09:00'
'2016-09-01 12:15:00'
'2016-09-01 11:49:00'
I think the most straight forward would be to split it and randomise and then put back together, but I hope there would be a function that does it more elegantly:
2016-09-01 12: randomize: 00
etc
Cheers
             
            
              
            
                
           
          
            
            
              Emm, why not to convert(or store) it as js object?MomentJs 
Math way - convert your time to Unix Time(integer), so 15 min is Math.random() * 1000 * 60 * 15 = 0-15 min
You may search StackOverflow answers for ready to use functions.
You can catch requests to db with Collection helpers  for example. But I’d rather use Method.