Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -748534.676 ms |
| Heart (set every hour) | -3632.150 ms |
| Raw crystal (set once) | +3738.205 ms |
| Raw crystal (set every hour) | +20.766 ms |
| This machine's own clock | -1.913 ms |
| Heart time lost to host stalls | +752271.600 ms |
| Atomic round trip | +4.623 ms |