1new Date(NaN).setFullYear(NaN) = NaN 2new Date(0).setYear(70) = 0 3new Date(0).setYear(NaN) = NaN 4new Date(NaN).setYear(70) = -19800000 5new Date(NaN).getTimezoneOffset() = NaN 6Date.prototype.setMilliseconds calls valueOf on arg 7Date.prototype.setUTCMilliseconds calls valueOf on arg 8Date.prototype.setSeconds calls valueOf on arg 9Date.prototype.setUTCSeconds calls valueOf on arg 10Date.prototype.setMinutes calls valueOf on arg 11Date.prototype.setUTCMinutes calls valueOf on arg 12Date.prototype.setHours calls valueOf on arg 13Date.prototype.setUTCHours calls valueOf on arg 14Date.prototype.setDate calls valueOf on arg 15Date.prototype.setUTCDate calls valueOf on arg 16Date.prototype.setMonth calls valueOf on arg 17Date.prototype.setUTCMonth calls valueOf on arg 18