One of the new features of the recently released Pocket Informant version 3.33 is a Quick Move feature for events and tasks. Long tap on an item in Calendar or Task view and you see the following popup-menu.
The row of icons below the “Move” menu command is new. When you select any of them the item will be moved to: today, tomorrow or the next Monday. And it will be done immediately without any date selection or confirmation windows.