DW FSHDGK it's basically just [current time] + [clock time (6:15)], like normal time summation, but any overflow past 12 for the hour goes to 1 (no military time)
haha! It's a decent puzzle. I feel like they should give out more hints that would make it a bit easy for the player to understand lol also is it the current time in game or in real life :') haha....