Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -11271547.808 ms |
| Heart (set every hour) | -22324.106 ms |
| Raw crystal (set once) | +14424.503 ms |
| Raw crystal (set every hour) | +22.425 ms |
| This machine's own clock | -0.987 ms |
| Heart time lost to host stalls | +11285950.768 ms |
| Atomic round trip | +6.253 ms |