(1) "Benefit year" means the period of fifty-two consecutive calendar weeks beginning with the first week of a claims series established by the filing of a valid initial claim; except that the benefit year shall be fifty-three weeks if filing a new valid claim would result in overlapping any quarter of the base year of a previously filed new claim.
(2) As used in this section:
(a) A "valid initial claim" means an application for the determination of benefit rights which includes the claimant's social security number and which establishes that the claimant has met the eligibility condition set forth in section 8-73-107 (1)(e).
(b) A calendar week shall be deemed to be entirely within that calendar quarter which contains the first day of such week.