Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -640266.715 ms |
| Heart (set every hour) | -8604.940 ms |
| Raw crystal (set once) | +3162.616 ms |
| Raw crystal (set every hour) | +30.235 ms |
| This machine's own clock | -0.463 ms |
| Heart time lost to host stalls | +643428.076 ms |
| Atomic round trip | +6.371 ms |