There is a Russian submarine base on the Kola peninsula near Murmansk. Clear sailing into the Arctic Ocean. A combat submarine is not equipped for underwater detective work. And it is far from a nimble customer in shallow littoral waters like the Baltic Sea.

North Korea launched its missile in nearly the only direction available to it, because it would be all kinds of bad news to launch it east (Russia or China).

The two are only calendar coincidences. There is no connection between them. Somebody, somewhere was born that day. Somebody, somewhere died that day. Somebody farted. Somebody got a windfall. They were all coincidences. But they were not connected.