In plain English
It refers to a specific calendar day that must be left out when availability is considered. For the scheduling purpose in question, that day is treated as not open for use.
In context
Here, it labels the date that is identified as excluded from availability for scheduling.
- Situation
- Managing schedules, shifts, attendance, leave, timesheets, and availability
- What it communicates
- Field label for a date marked as unavailable for scheduling.
Meaning limits
By itself, the term does not say why the date is excluded or who designated it that way.
Examples
“For cabin reservations, 12 July is a blackout date, but the rest of that week is open.”
“The coordinator skipped the blackout date when assigning rehearsal times.”