147098 2015-07-19 15:33:35 -0700 Date.parse should not accept second values of "60" 2022-04-02 15:10:33 -0700 1 1 1 Unclassified WebKit JavaScriptCore 528+ (Nightly build) Unspecified Unspecified RESOLVED FIXED http://ecma-international.org/ecma-262/6.0/#sec-date-time-string-format ES5 P2 Normal --- 1 ljharb webkit-unassigned darin fpizlo mark.lam ysuzuki oldest_to_newest 1110532 0 ljharb 2015-07-19 15:33:35 -0700 `Date.parse('2012-12-31T23:59:60.000Z')` should return NaN, and instead returns `Date.parse('2013-01-01T00:00:00.000Z')` `Date.parse('2015-06-30T23:59:60.000Z')` should return NaN, and instead returns `Date.parse('2015-07-01T00:00:00.000Z')` Note that the second example is an actual leap second, and it doesn't even work properly. The spec requires that only seconds from 0 to 59 are supported. 1857628 1 ljharb 2022-04-02 15:10:15 -0700 In latest Safari, both of these return NaN, so it must have been fixed at some point.