Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -11169503.958 ms |
| Heart (set every hour) | -16185.779 ms |
| Raw crystal (set once) | +14328.452 ms |
| Raw crystal (set every hour) | +18.872 ms |
| This machine's own clock | -4.617 ms |
| Heart time lost to host stalls | +11183809.708 ms |
| Atomic round trip | +14.496 ms |