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Dafrok/timeDec.js

Last active September 14, 2017 08:43
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timeDec.js
function timeDec(t1, t2) {
const DAY = 24 * 60 * 60 * 1000
const SPACING = DAY * 7 / 24
const t = d => ((r = new Date(d), (22<= r < 6) ? new Date(r.setHours(22)) : r >= 0 ? new Date(r - DAY) : new Date(r)).getTime())
const dec = t(t1) - t(t2)
return Math.abs(dec- ((dec / DAY) | 0) * SPACING)
}
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