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Start vs Early Start when showing Late Dates either way

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John Reeves
User offline. Last seen 11 weeks 15 hours ago. Offline
Joined: 10 May 2013
Posts: 342
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I prefer showing Stat and Finish, and also Late Start and Late Finish.  Spec and others want Early Start instead of Start, what is the easiest way to explain the difference.

Rodel Marasigan
User offline. Last seen 1 hour 48 min ago. Offline
Joined: 25 Oct 2006
Posts: 1699

Early dates (Early Start/ Early Finish) is different from current date (Start/ Finish)

Early Date - The earliest possible date the remaining work for the activity can begin and end. This date is computed by the software based on network logic, schedule constraints, and resource availability.

Start/ Finish - The current start date of the activity.  Set to the activity remaining early start date while the activity is not started, and the actual start date once the activity is started and the current finish date of the activity was set to the activity remaining early finish date while the activity is not started or in progress, and the actual finish date once the activity is completed.