Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -2867586.648 ms |
| Heart (set every hour) | -31878.699 ms |
| Raw crystal (set once) | +6996.715 ms |
| Raw crystal (set every hour) | +23.818 ms |
| This machine's own clock | -2.108 ms |
| Heart time lost to host stalls | +2874593.619 ms |
| Atomic round trip | +5.715 ms |