Meaning : The time at which something is supposed to begin.
Example :
They got an early start.
She knew from the get-go that he was the man for her.
Synonyms :
beginning, commencement, first, get-go, kickoff, offset, outset, showtime, start
The point in time at which something ends.
The end of the year.
The ending of warranty period.
end,
ending
Time between the beginning and the end of a temporal period.
The middle of the war.
Rain during the middle of April.
middle