That's the definition. At least that's my definition. What is yours?
Says who? What you have defined - a start and a finish - measures a time interval - and not time itself.
A word is a group of letters that string together to represent something in written form - isn't time just a start and a finish strung together to represent a moment, occurrence or period?
I view time itself as what exists between a beginning and an end - divide it up as many times as you like, slice it up into millenniums, hours or seconds and it's still various measurements of time itself.
What do you define time itself as?
For God to "create time" he ought to be antecedent to/precede the "first" moment of time temporally. Otherwise, God and time came to exist at the same time. If there is no time, cause and effect are meaningless. God could not have caused time. Time could have caused God. How would you tell the two apart?
Yeah GOD was before time. GOD could have caused time because, as you said, something had to cause the other thing. GOD has no cause, GOD simply
is. GOD was before time. Otherwise time could not have come to exist. Since time is a period between a start and a finish, GOD had to be before the start and after finish, which is what He is.
It may perhaps be useful if you lay down the conditions for when you believe event A causes event B.
I'm sorry I don't understand what you are asking.
GOD is not contained within time because He has no start and no finish. Time itself has a start and a finish. GOD started time. GOD will end time. GOD existed before time was started. GOD will exist after time is finished.