Is Phlox perhaps Neelix enough?

Is it just me or do neither ISO8601 nor RFC3339 contain any timestamp formats that are windows file system compliant? There doesn’t seem to be a time format that doesn’t contain a colon.

I’m pretty new to all this, but I’m assuming that subscriptions are instance account specific. If there was a way to sync subscriptions between accounts in different instances then that would be good, but I’m finding that without subscriptions the default feeds are kind of all over the place.