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abl/isdst.js

Created September 10, 2013 16:48
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  1. @Aleksandyr Aleksandyr created this gist Sep 10, 2013.
    14 changes: 14 additions & 0 deletions isdst.js
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,14 @@
    //This is completely ridiculous.
    var jan = new Date(this.getFullYear(), 0, 1).getTimezoneOffset();
    var jul = new Date(this.getFullYear(), 6, 1).getTimezoneOffset();
    var today = new Date().getTimezoneOffset();

    if(jan == jul) {
    $('#daylight_savings').prop('checked', false);
    } else if(jan > jun) {
    //Northern hemisphere
    $('#daylight_savings').prop('checked', (jun==today));
    } else { //jun < jan
    //Southern hemisphere
    $('#daylight_savings').prop('checked', (jan==today));
    }