Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -695312.079 ms |
| Heart (set every hour) | -6340.029 ms |
| Raw crystal (set once) | +3453.902 ms |
| Raw crystal (set every hour) | +29.517 ms |
| This machine's own clock | -1.671 ms |
| Heart time lost to host stalls | +698764.005 ms |
| Atomic round trip | +4.548 ms |