Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -504742.769 ms |
| Heart (set every hour) | -11013.808 ms |
| Raw crystal (set once) | +1188.440 ms |
| Raw crystal (set every hour) | +33.033 ms |
| This machine's own clock | -4.048 ms |
| Heart time lost to host stalls | +505931.225 ms |
| Atomic round trip | +3.986 ms |