knockout/knockout — pull request #1261 by andrew-veresov (2013-12-26 00:09:43+00:00)
Title: Fixed issue with Date objects used for options binding in combination with value binding

The problem is described in the https://github.com/knockout/knockout/issues/1260 issue.

In short: Dates are compared by their references and in case of objects of Date type we should also take in account actual value in millisecconds of Date objects.