A calendar defines on which days and at which times work is performed (regular working days) and when no work takes place (e.g. weekends, public holidays, or company holidays). It forms the temporal basis for calculating activity durations as well as start and end dates.

oculai imports the calendar configuration together with the schedule, provided it was created in a common scheduling tool (MS Project, Asta Powerproject, or Primavera P6). When the schedule is updated, the calendar configuration is automatically overwritten unless otherwise defined.
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While calendars always refer to a specific schedule version and are overwritten when a new schedule is imported, under "Non-working days / Disturbances" there is the option to define non-working days (public holidays, company holidays, and disturbances) globally. These are therefore not overwritten with a new schedule version and are taken into account together with the non-working days for the calculation of activity durations.