2.1.4 [ECMA-402/2] Section 12.3.4 DateTime Format Functions

V0123: Old dates are not formatted correctly

The specification states:

 12.3.4 DateTime Format Functions
     A DateTime format function is an anonymous function that optionally takes an argument 
     date. ...
     When the FormatDateTime abstract operation is called with arguments dateTimeFormat 
     (which must be an object initialized as a DateTimeFormat) and x (which must be a 
     Number value), it returns a String value representing x (interpreted as a time value 
     as specified in ES2015, according to the effective locale and the 
     formatting options of dateTimeFormat.

EdgeHTML Mode (All versions)

Old dates are not formatted correctly; for example, June 1 BC.