(4) "Period" means a day, week, month, or other subdivision of a year.

"Period" means any of the time periods into which the calendar year is divided for purposes of authorizing a percentage of the state ceiling to be used during such period as provided in this article as follows: period 1 begins January 1 and ends at midnight [...]

(3) "Period" means the time since the closing date of the previous issue of the Georgia_Register.