3. Public holidays.
(1) Subject to the provisions of this section, each of the following days shall, for the purposes of this Act, be a public holiday, that is to say: -
(a) Christmas Day when it falls on a weekday or, when it falls on a Sunday, the 27th day of December, and
(b) St. Stephen's Day when it falls on a weekday or, when it falls on a Sunday, the next following Monday, and
(c) St. Patrick's Day when it falls on a weekday or, when it falls on a Sunday, the next following Monday, and
(d) Easter Monday, Whit Monday, and the first Monday in August.
(2) Whenever in any year a day is appointed under the Public Holidays Act, 1924 (No. 56 of 1924), to be a bank holiday instead of a day mentioned in the next preceding sub-section of this section, the day so appointed shall in that year be deemed to be substituted throughout the said sub-section for the day so mentioned and the said sub-section shall be construed and have effect accordingly.
(3) The Minister may, whenever and so often as he thinks fit, by order under this sub-section amend, in respect of any specified area, sub-section (1) of this section in any one or more of the following ways, that is to say: -
(a) by substituting for the day which is a public holiday by virtue of paragraph (b) of the said sub-section (1), the 1st day of January, or the 6th day of January,
(b) by substituting for Easter Monday, Ascension Thursday,