Early and Late Dates in Project Management

You have heard of early and late dates when studying project management, project scheduling or in project management software like Primavera. Below, I will describe early and late dates in easy words.

Early Dates

Early Start:

The earliest possible date the remaining work for the activity can begin. This date is calculated by the project scheduler based on activity relationships, schedule constraints, and resource availability. The Early Start equals the Remaining Start unless you preserve the scheduled early dates during leveling.

Early Finish:

The earliest possible date the activity can finish. This date is calculated by the project scheduler based on activity relationships, schedule constraints, and resource availability. The Early Finish equals the Remaining Finish unless you preserve the scheduled early dates during leveling

Late Dates

Late Start:

The latest possible date the remaining work for the activity must begin without delaying the project finish date. This date is calculated by the project scheduler based on activity relationships, schedule constraints, and resource availability. The Late Start equals the Remaining Late Start unless you preserve the scheduled late dates during leveling.

Late Finish:

The latest possible date the activity must finish without delaying the project finish date. This date is calculated by the project scheduler based on activity relationships, schedule constraints, and resource availability. The Late Finish equals the Remaining Late Finish unless you preserve the scheduled late dates during leveling.

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