Re: When was the W3C HTML Validator launched?

Thanks Philip, Yukka...
Following the link from the Wikipedia I found this press release:
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http://www.w3.org/Press/HTML4-REC
CAMBRIDGE, MA, USA -- 18 December, 1997 (...)
W3C HTML Validation Service
To further promote the reliability and fidelity of communications on the
Web, W3C today also introduced the W3C HTML Validation Service at
http://validator.w3.org/ (...)
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So I think we can take this date, 18 December 1997, as the official launch
date of the HTML validator.
Thanks!
Jaime