To customize day and month names for the pop-up calendar
If you want to customize pop-up calendar names for all fpSpread controls in your project, at run time, use the SetCalText method and set the ShortDays, LongDays, ShortMonths, LongMonths, OkText, and CancelText parameters as appropriate.
If you want to customize pop-up calendar names for a specific fpSpread control, at run time for each fpSpread control you want to customize, use the SetCalTextOverride method and set the ShortDays, LongDays, ShortMonths, LongMonths, OkText, and CancelText parameters as appropriate.