http://www.ru.ac.za/departments/iwr/staff/daf/sartrain.html has been crawled 64 times going all the way back to August 15, 1997.

A crawl can be a duplicate of the last one. It happens about 25% of the time across 420,000,000 websites. FAQ
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January 1, 2006

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Note

This calendar view maps the number of times http://www.ru.ac.za/departments/iwr/staff/daf/sartrain.html was crawled by the Wayback Machine, not how many times the site was actually updated. More info in the FAQ.