Certain calendars - e.g Hebrew & Chinese Lunar Calendar - can only be shown in iOS as "alternative calendars" rather than the main system calendar. This means it is currently impossible to view those calendars in Timepage.
This request is to allow the displaying of the dates of these "alternative calendars" in Timepage alongside the main system calendar.
Some details on how these calendars are added in iOS: http://www.imore.com/how-enable-and-use-alternate-calendar-formats-iphone-and-ipad
Screenshots show how the Hebew calendar dates are presented in iOS Calendar.