Relevant date definition clarifies timing for approval, execution, or acquisition documents under combinations rules. The regulations define key terms for combination control: Act refers to the Competition Act, 2002; Parties to the combination includes persons or enterprises entering the combination and the combined entity where effective; references to 'days' mean calendar days; and Relevant date is the board approval date for merger/amalgamation proposals or the execution date of agreements or documents effecting acquisition or control. Undefined terms adopt meanings from the Act, its subordinate instruments, or the Companies Act, 2013.