The special project calendar is derived from the default system calendar, and should only contain project specific deviations.
Calendar is used for:
  • Escalation time calculation is using predefined Working hours
  • Burn down and up chart rendering considering only predefined Working days
  • No other feature considers currently these settings
See documentation...
Hours is a comma-separated list of business hour periods in a 24-hour format. For example, "9:00 - 18:00" or "8:30 - 12:00, 13:00 - 17:30".
Default Business Hours
Special Calendar Days

There can be multiple definitions for the same day of the week. These definitions depend on different periods that start at or are valid until the following dates: [MMM dd yyyy or yyyy-MM-dd].
Starting at Valid until Weekday Working Hours