Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -224678.324 ms |
| Heart (set every hour) | -3695.662 ms |
| Raw crystal (set once) | +1032.227 ms |
| Raw crystal (set every hour) | +25.959 ms |
| This machine's own clock | -1.572 ms |
| Heart time lost to host stalls | +225710.486 ms |
| Atomic round trip | +5.694 ms |