Shall be as follows: (i) BSC Spring shall be 1st March to 31st May inclusive; (ii) BSC Summer shall be 1st June to 31st August inclusive; (iii) BSC Autumn shall be 1st September to 30th November inclusive; and (iv) BSC Winter shall be 1st December to 28th (or 29th, as the case may be) February inclusive, provided that the first relevant BSC Season shall be the period from the Go-live Date to the end of the next following BSC Season; (b) a year means any period of 12 months; has the meaning given to that term in Section K3.4.9;