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Class 1A - System Timetables |
| 1970 |  April 1 |
 July 1 |
 Nov 1 |
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| 1971 |  Jan 1 |
 April 1 |
 June 1 |
Nov 1 |
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| 1972 | April 1 |
June 1 |
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| 1973 |  June 1 |
 Nov 1 |
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| 1974 |  Jan 1 |
April 1 |
 June 1 |
Nov 1 |
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| 1975 |  Jan 1 |
April 1 |
 June 1 |
 Nov 1 |
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| 1976 | Jan 1 |
 April 1 |
 June 1 |
Nov 1 |
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| 1977 |  January 1 |
 April 1 |
 June 1 |
 November1 |
| 1978 |  January 1 |
 April 1 |
June 1 |
 November 1 |
| 1979 |  April 1 |
 June 1 |
 November 1 |
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Contributor to this page
|
David Zekria |
Copyright (c) 1997-2025 Perry A Sloan - All Rights Reserved
Updated October 13, 2025