How to eliminate garbage value filled in date field

I want to filter data for which date field stored is garbage value like -62135596800000.

For Eg.
id: 1
date : -62135596800000

date : 2015-10-08 00:00:00.000Z

date : 2015-01-18 00:00:00.000Z

But while printing all the data ,date : -62135596800000 is represented as Mon Jan 01 0001 05:30:00 GMT+0530 (IST). I want to eliminate this date from records while printing.Please let me know if any query for this