CONFCAL/SHIFT

A calendar specified in CONFCAL is not used for mission scheduling but is used instead for validating a scheduled date. Only missions which have satisfied all other specified basic scheduling criteria are checked against the CONFCAL calendar. If the day is a working day in the CONFCAL calendar, the mission is scheduled on that day. Otherwise, the mission is either shifted to (scheduled on) another day according to the value specified in parameter SHIFT, or the mission is not scheduled (if no SHIFT value has been specified).

CONFCAL calendars are useful for handling holidays and other scheduling exceptions.

Defining a Schedule – Internal Scheduling Logic

When defining missions, it is useful to understand the IOA Scheduling facility logic which determines whether or not to order a mission on a specific day. This logic is described below.

1. DAYS/DCAL parameters are checked independently and a first tentative scheduling decision is created.
2. WDAYS/WCAL parameters are also checked independently and a second tentative scheduling decision is created.
3. A third tentative scheduling decision is created based on the above two decisions and the AND/OR value linking them.

   If DAYS/DCAL are not specified, this third scheduling decision is identical to the second scheduling decision. If WDAYS/WCAL are not specified, this third scheduling decision is identical to the first scheduling decision.

4. If CONFCAL/SHIFT are specified, the third scheduling decision is adjusted according to the CONFCAL/SHIFT criteria.
5. This third decision (as adjusted) becomes the final scheduling decision. The IOA Scheduling facility determines whether or not to schedule a mission based on this final scheduling decision.