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From: Dr J R Stockton on 9 Apr 2010 14:05
In comp.lang.javascript message <ac65084a-7a86-4584-96f2-d4bf12c650ae(a)k1
3g2000yqe.googlegroups.com>, Wed, 7 Apr 2010 18:51:26, RobG
<rgqld(a)iinet.net.au> posted:

>function STonoff() {
> var J, K, Y = (new Date).getFullYear();
> document.write("Five years; seven civil days always crossing", "
>EU Summer Time changes\nYear Spring Autumn");
> for (K = -2; K <= 2; K++) {
> J = Y + K;
> var D1 = new Date(J, 3, -6);
> var D2 = new Date(J, 3, 1);
> var X1 = (D2 - D1) / 86400000;
> var D3 = new Date(J, 10, -6);
> var D4 = new Date(J, 10, 1);
> var X2 = (D4 - D3) / 86400000;
> document.write("\n", J, " ", StrU(X1, 1, 6), " ", StrU(X2, 1,
>6));
> }
>}


>1. Apparently it "calculates the difference in 24-hour days between
>civil dates a week apart, necessarily spanning each EU clock
>transition".

I'd rather say in 86400-second days.

><URL: http://www.merlyn.demon.co.uk/js-date3.htm#DL >

If you can, please adjust the dates for Australia and try it in Opera
10.51 or thereabouts, contrasting the results with those in Opera <=
10.10 or with another browser. There is no harm in broadening the range
of K, if your aim is uncertain

--
(c) John Stockton, nr London UK. ?@merlyn.demon.co.uk Turnpike v6.05 MIME.
Web <URL:http://www.merlyn.demon.co.uk/> - FAQish topics, acronyms, & links.
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