South Australia
Daylight Saving Act 1971
An Act to promote the longer use of daylight in certain months of the year and to provide for matters incidental thereto.

Contents
1	Short title
2	Interpretation
3	Advance of time
3A	Power to make regulation
4	Reference to time
4A	Governor may exclude part of State from application of this Act
5	Savings
Legislative history

The Parliament of South Australia enacts as follows:
1—Short title
This Act may be cited as the Daylight Saving Act 1971.
2—Interpretation
In this Act, unless the contrary intention appears—
the prescribed period means—
	(a)	if no period for the observance of South Australian summer time is prescribed by regulation—the period from 2 a.m. South Australian standard time on the last Sunday in October until 2 a.m. South Australian standard time on the first Sunday in the following March;
	(b)	if a period for the observance of South Australian summer time is prescribed by regulation—the period so prescribed;
South Australian standard time means the time declared by The Standard Time Act 1898 to be standard time throughout South Australia;
South Australian summer time means the time to be observed throughout the State as prescribed by this Act.
3—Advance of time
	(1)	South Australian summer time shall be one hour in advance of South Australian standard time.
	(2)	Notwithstanding The Standard Time Act 1898 but subject to section 4A, South Australian summer time shall be observed throughout the State during the prescribed period.
3A—Power to make regulation
The period for the observance of South Australian summer time may be prescribed by regulation.
4—Reference to time
	(1)	Subject to section 4A, in relation to the prescribed period, a reference to time in any instrument or in any oral contract, stipulation or direction shall, unless the contrary intention is expressed, be taken to be a reference to South Australian summer time.
	(2)	In this section—
instrument means—
	(a)	an Act or an instrument made in pursuance of statutory powers; or
	(b)	a proclamation or order in Council; or
	(c)	a judgment, order, judicial direction or process; or
	(d)	an order, direction or notice given in pursuance of an executive or administrative authority; or
	(e)	a deed, contract, or other instrument.
4A—Governor may exclude part of State from application of this Act
	(1)	The Governor may, by regulation, exclude from the application of this Act any specified part of the State with effect for the whole of the prescribed period or any specified part of the prescribed period.
	(2)	While this Act does not apply to a particular part of the State by virtue of an exclusion under subsection (1), The Standard Time Act 1898 applies in relation to that part of the State.
5—Savings
	(1)	Except as otherwise expressly provided in this Act, the provisions of The Standard Time Act 1898 are not affected by this Act.
	(2)	Nothing in this Act affects the use of South Australian standard time for the purposes of astronomy, meteorology or navigation, or the construction of any document mentioning or referring to a point of time in connection with any of those purposes.

Legislative history
Notes
	•	For further information relating to the Act and subordinate legislation made under the Act see the Index of South Australian Statutes or www.legislation.sa.gov.au.
Principal Act and amendments
New entries appear in bold.
Year	No	Title	Assent	Commencement	
1971	54	Daylight Saving Act 1971	30.9.1971	30.9.1971	
1972	81	Daylight Saving Act Amendment Act 1972	12.10.1972	12.10.1972	
1986	1	Daylight Saving Act Amendment Act 1986	27.2.1986	27.2.1986	
Provisions amended since 3 February 1976
	•	Legislative history prior to 3 February 1976 appears in marginal notes and footnotes included in the consolidation of this Act contained in Volume 3 of The Public General Acts of South Australia 1837-1975 at page 429.
New entries appear in bold.
Provision	How varied	Commencement	
s 2			
the prescribed period	inserted by 1/1986 s 2	27.2.1986	
s 3	substituted by 1/1986 s 3	27.2.1986	
s 3A	inserted by 1/1986 s 3	27.2.1986	
s 4	substituted by 1/1986 s 3	27.2.1986	
s 4A	inserted by 1/1986 s 3	27.2.1986