Node timer counters

In one aspect of Vale I'm making tech to keep the node system functional, from the player side of things I'm trying to find ways to hit as many nodes as possible and collect all the stuff. While you're waiting at a node it would be really useful to know how long it had been since the node last spawned. There is a 6 hour window for 3 spawns so it's going to be roughly every 2 hours. I thought it would be handy to drop these counters near the node so anyone can update the time then, if you arrive 10 minutes after the previous drop it's worth going on to the next node.

They're based on this wound counter design but two concentric rings allows me to set the hour and the minutes separately.