What steps will reproduce the problem? Configure the calendar with showYearNavigation: true, startDate: '01/01/1960'

What is the expected output? What do you see instead? The expected output is to see December both in 1960 and 1988. December doesn't appear. When clicking next in November, nothing happens. When clicking previous in January 1989, jumps to November 1988. The whole month is missing and not selectable.

Please provide a URL to a page displaying the problem. http://www.kelvinluck.com/assets/jquery/datePicker/v2/demo/datePickerPastDate.html Please note you have to alter this example to allow years 1960 and 1988.

What version of the datepicker are you using? On what operating system? And Which Browser? Version 2 (latest) Ubuntu 12.04 LTS Firefox 29.0

Please provide any additional information below. It doesn't reproduce in Windows environments. Could be related to timezone issues?

Sorry, I don't have time to maintain this plugin any more.

I will gladly accept a pull request on the github repo if you find a solution though: https://github.com/vitch/jQuery-datepicker