18. The following are holidays:(1) Sundays;
(2) 1 and 2 January;
(3) Good Friday;
(4) Easter Monday;
(5) the Monday preceding 25 May;
(6) 24 June;
(7) 1 July, or 2 July when 1 July is a Sunday;
(8) the first Monday of September;
(9) the second Monday of October;
(10) 25 and 26 December;
(11) any other day fixed by proclamation or order of the Government as a public holiday or as a day of thanksgiving.