Any notice, demand, request, consent, approval, disapproval or certificate (“ Notice ”) required or desired to be given under this Lease shall be in writing and given by certified mail, return receipt requested, by personal delivery or by a nationally recognized overnight delivery service (such as Federal Express or UPS) providing a receipt for delivery. Notices may not be given by facsimile. The date of giving any Notice shall be deemed to be the date upon which delivery is actually made by one of the methods described in this Section 20(c) (or attempted if said delivery is refused or rejected). If a Notice is received on a Saturday, Sunday or legal holiday, it shall be deemed received on the next business day. All notices, demands, requests, consents, approvals, disapprovals, or certificates shall be addressed at the address specified in Item 14 of the Basic Lease Provisions or to such other addresses as may be specified by written notice from Landlord to Tenant and if to Tenant, at the Premises. Either party may change its address by giving reasonable advance written Notice of its new address in accordance with the methods described in this Paragraph; provided, however, no notice of either party’s change of address shall be effective until fifteen (15) days after the addressee’s actual receipt thereof. For the purpose of this Lease, Landlord or Tenant’s counsel may provide Notices to Landlord or Tenant on behalf of Landlord or Tenant and such notices shall be binding on the other party as if such notices have been provided directly by Landlord or Tenant.