What a notice period does
A notice period sets the amount of time that must pass—or the advance warning required—before an action such as termination, renewal prevention, or a contractual change takes effect.
Calendar days versus business days
A clause may count every calendar day or only defined business days. Public holidays may also matter if the contract defines them separately.
Delivery and deemed receipt
Some agreements specify email, courier, registered mail, or a notice address and say when notice is considered received. The delivery rule can affect the true deadline.
Counting can depend on wording
Whether the first day is included, what happens when a deadline falls on a weekend, and how months are calculated can depend on the document and applicable rules. Use a calculator for arithmetic, then compare it with the clause.
Use these guides to understand concepts and organize a first pass. For advice about enforceability, rights, obligations, or your circumstances, consult a qualified legal professional.