definiens: shall be to calendar days, and shall mean all days other than Saturdays, Sundays or a national or local holiday recognized in the UnitedStates . Whenever the last day for the exercise of any privilege or the discharge of any duty hereunder shall fall on a Saturday, Sunday, or national holiday, the Party having such privilege or duty shall have until 5:00 pm PST on the next succeedingbusiness day to exercise such privilege or to discharge such duty . It is further agreed that no usage of trade or other regularpractice between the Parties hereto shall be used to interpret or alter the terms of this Agreement . Ambiguities, if any, in thisAgreement shall not be construed against any particular Party, irrespective of which Party may be deemed to have authoredthe ambiguous provision . All monetary amounts under this Agreement are in U.S. dollars . Reference to a Section of thisAgreement includes all subsections and subparts of that Section, except as the context may otherwise require