Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -868822.887 ms |
| Heart (set every hour) | -11970.339 ms |
| Raw crystal (set once) | +4128.483 ms |
| Raw crystal (set every hour) | +26.647 ms |
| This machine's own clock | -2.679 ms |
| Heart time lost to host stalls | +872951.477 ms |
| Atomic round trip | +9.434 ms |