asp.net - How to get random time in certain time format -

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i want date 2013/01/01 today. plus time 14:00 23:00 time interval 15min.

for example: 

2013/01/01 14:15 2013/01/21 14:30 2013/01/21 17:45 2013/03/17 14:00 . . .

for date, can use code below i'm not sure of time part

datetime start = new datetime(2013, 1, 1); random gen = new random(); int range = (datetime.today - start).days;            start.adddays(gen.next(range));

this should work:

int starthour = 14; int endhour = 23; int allquarters = enumerable.range(0, (endhour - starthour) * 4).count(); timespan time = timespan.fromminutes(gen.next(allquarters) * 15); start = start + timespan.fromhours(starthour) + time;

demo


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