Hey Erik, maybe it is easy to add a unit test or two for this one? Along the lines of this and perhaps one that covers a modern year?
(is (= "#inst \"0985-04-12T23:20:50.520-00:00\"" (pr-str #inst "0985-04-12T23:20:50.520-00:00")))
There is some trickery with the date here which I’m not able to figure out. Have a look at #cljs-dev