Conn. Gen. Stat. § 42a-1-205
Reasonable time; seasonableness.
(b) An action is taken seasonably if it is taken at or within the time agreed or, if no time is agreed, at or within a reasonable time.
Burden of proof for establishment of custom and usage is on defendant. 160 C. 468. Cited. 198 C. 624; 216 C. 458.