Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -12212909.684 ms |
| Heart (set every hour) | -40064.656 ms |
| Raw crystal (set once) | +15475.750 ms |
| Raw crystal (set every hour) | +33.486 ms |
| This machine's own clock | -1.982 ms |
| Heart time lost to host stalls | +12228377.695 ms |
| Atomic round trip | +4.706 ms |