Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -11558442.284 ms |
| Heart (set every hour) | -18262.212 ms |
| Raw crystal (set once) | +14807.079 ms |
| Raw crystal (set every hour) | +25.923 ms |
| This machine's own clock | -1.371 ms |
| Heart time lost to host stalls | +11573232.530 ms |
| Atomic round trip | +4.711 ms |