Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -1164236.249 ms |
| Heart (set every hour) | -4583.971 ms |
| Raw crystal (set once) | +4981.712 ms |
| Raw crystal (set every hour) | +12.248 ms |
| This machine's own clock | -0.268 ms |
| Heart time lost to host stalls | +1169221.064 ms |
| Atomic round trip | +9.533 ms |