Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -7624963.508 ms |
| Heart (set every hour) | -66080.278 ms |
| Raw crystal (set once) | +11121.019 ms |
| Raw crystal (set every hour) | +47.858 ms |
| This machine's own clock | +1.697 ms |
| Heart time lost to host stalls | +7636074.088 ms |
| Atomic round trip | +14.452 ms |