The date of an event consists of the 0=Day , 0=Month , 0=Year and 0=Weekday gadgets. Leaving any of these gadgets empty ( 0=Month and 0=Weekday show ANY instead of empty gadget) means that any value is acceptable. This way you can enter repeating events. 0=Weekday is different from other gadgets, however. Selecting a weekday into 0=Weekday means that the event is due on the next specified weekday ON OR AFTER the date selected.
0=Day accepts all numbers from 1 to 31, empty gadget representing `any day'.
You can select a month into 0=Month from the list above it. You can of course enter the month by hand, too. In this case REMINDER selects the first month starting with the letters you entered (I.e. entering ap would select April). Entering the month this way is case-insensitive. You can also enter into the gadget just the number of the month (I.e. entering 10 would select October). Leaving the gadget empty (or entering or selecting ANY) means `any month'.
0=Year accepts all numbers from 1993 to 209912. You can also enter a number from 93 to 99 to represent years 1993 – 1999 or a number from 0 to 92 to represent years 2000 – 2092. Leaving the gadget empty means `any year'.
You can enter a value to 0=Weekday by selecting a weekday from the list above the gadget. Selecting ANY means `any weekday'.
The text gadget above 0=Day is a read-only gadget telling the weekday of non-repeating exact events13 (i.e. events with 0=Day , 0=Month and 0=Year set to specific values and 0=Weekday as ANY). I myself have very little use for this gadget, but I was requested it. The event list shows the weekday of non-repeating exact events, also. There is a colon after the weekday indicating that the weekday is not entered by you, but calculated by REMINDER .
A few examples should clarify the usage of date gadgets.