In Critical Path Analysis using precedence diagrams (showing activities linked by logical connections/constraints e.g. Activity A must happen before Activity B), then the Earliest Start (Earliest Event Time?) is the earliest time that that activity can start according to the logical constraints of the precedence diagram and the constraint types (Finish to Start, Start to Start, Finish to Finish or Start to Finish).
earliest occurence time in event
The visit of the relatives
The Big Bang! Space-time did not exist before the Big Bang so there can be no earlier events.
From the earliest event of writing up to the present day. (previous to these times we have no evidence)
Earliest Available Time or Earliest Arrival Time
Samoa Island has the earliest time in the world.
The earliest time mid March in spring
Yes. But earliest is also an adjective, the superlative of early (most early). adjective - the earliest time adverb - he arrived earliest
The earliest check-in time at the hotel is typically around 3:00 PM.
The earliest time you can check in to the hotel is typically around 3:00 PM.
usually the earliest is 12:00 noon
It depends on your location. Go to myzmanim.com in order to see what time is the earliest time to daven mincha today.