50. Office hours [Section 22(4)] (1) From Mondays to Fridays the Office will be open to the public from 08:00 to 15:00, except on the following days: (a) All days which are public holidays in terms of section 1 of the Public Holidays Act or which have been proclaimed public holidays in terms of section 2 of that Act; and (b) days which may from time to time be notified by the Registrar by displaying a notice in a conspicuous place at the Office. (2) Whenever the last day fixed by the Act or by these regulations for doing anything shall fall on a day when the Office is not open to the public it shall be lawful to do any such thing on the day next following such excluded day or days if two or more of them occur consecutively. 51. Discretionary powers [Section 47] Where under these regulations any person is required to do any act or thing or to sign any documents or to make any affidavit on behalf of himself or of any body corporate or any document or evidence is required to be produced to or left with the Registrar or at the Office and it is shown to the satisfaction of the Registrar that for any reasonable cause such person is unable to do such act or thing or to sign such document or make such affidavit or that such document or evidence cannot be produced or left as aforesaid, it shall be lawful for the Registrar and upon the production of such other evidence and subject to such terms as he may think fit, to dispense with any such act or thing, document, affidavit or evidence. 52. Extension of time and condonation [Section 45(3)] (1) Any person interested in opposing a trade mark application may request the Registrar, on written notice before the expiry of the term in which to enter opposition to the application in terms of section 21, not to issue the certificate of registration for a period of three months from the date of expiry of the aforementioned term, and the Registrar shall not do so. (2) In the absence of an agreement between the parties the Registrar may, upon application on notice in terms of section 45(3) and on good cause shown, make an order extending or abridging any time prescribed by these 23