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laminr/gist:571b4cc65dd734d4345209a3dca3cd4c

Forked from donaldallen/gist:9557256
Created June 18, 2022 13:15
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Handle Daylight Savings Time (DST) in Javascript.
Raw
gistfile1.js
var today = new Date();
Date.prototype.stdTimezoneOffset = function() {
var jan = new Date(this.getFullYear(), 0, 1);
var jul = new Date(this.getFullYear(), 6, 1);
return Math.max(jan.getTimezoneOffset(), jul.getTimezoneOffset());
}
Date.prototype.dst = function() {
return this.getTimezoneOffset() < this.stdTimezoneOffset();
}
var utc_offset = '-7';
if (today.dst()) {
utc_offset = '-6';
}
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