If any of my users try to change the Month of the Monthly Calendar view, by clicking the arrows to the left of the current display month, they get a blank page.
The url they are sent to is as follows:
https://~/Lists/Calendar/calendar.aspx?CalendarDate=6%2F16%2F2014
If they insert a zero in front of the month digit SharePoint displays the page perfectly fine. ie:
https://~/Lists/Calendar/calendar.aspx?CalendarDate=06%2F16%2F2014
Here is where it gets strange, my staging environment will display the first URL and the second URL as expected, my production and dev environments choke on a single digit month. All environments display Oct, Nov, and Dec just fine because they are
2 digit months. All servers are Windows Server 2008R2 SP1 and Sharepoint build 12.0.0.6679
Anyone seen this before? I have checked, and changed, the regional settings for date format. They are all set to M/dd/yyyy and changing it had no effect.