Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -4522852.885 ms |
| Heart (set every hour) | -40523.959 ms |
| Raw crystal (set once) | +8245.060 ms |
| Raw crystal (set every hour) | +26.151 ms |
| This machine's own clock | -1.750 ms |
| Heart time lost to host stalls | +4531102.278 ms |
| Atomic round trip | +5.810 ms |