Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -11365744.029 ms |
| Heart (set every hour) | -32005.381 ms |
| Raw crystal (set once) | +14529.895 ms |
| Raw crystal (set every hour) | +33.891 ms |
| This machine's own clock | -0.089 ms |
| Heart time lost to host stalls | +11380253.684 ms |
| Atomic round trip | +5.069 ms |