I often wish we had a Date literal since it's so ubiquitous. Looks like it had been discussed many many years ago - perhaps we could revisit given so much time has passed: https://web.archive.org/web/20170202155307/http://wiki.ecmascript.org/doku.php?id=proposals:date_and_time
Adding to that, I'd be interested in a date primitive that, like a string primitive, can be turned into a full-fledged Date object when a method is called on it.