# What is the earliest time an activity can start is called?

By BYJU'S Exam Prep

Updated on: September 25th, 2023

Early Start Time (EST) is the earliest time to start an activity. It can be measured by moving from the first to the last event in a network. The formula to calculate EST is Early Finish of predecessor activity + 1.

## Answer: The earliest time an activity can start is called as Earliest start time (EST).

In the Early Start Time, all events start at the earliest so as to start activities at their earliest starting time and finish at their earliest finish time. There may be a fallback in the time between the completion of certain activities and the occurrence of events.

Summary:

## What is the earliest time an activity can start is called?

The earliest time an activity can start is Early Start Time (EST). On the other hand, Early Finish Time refers to the time in which all activities finish at the earliest.

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