Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -8961345.783 ms |
| Heart (set every hour) | -59484.572 ms |
| Raw crystal (set once) | +11784.645 ms |
| Raw crystal (set every hour) | +27.509 ms |
| This machine's own clock | -2.821 ms |
| Heart time lost to host stalls | +8973116.659 ms |
| Atomic round trip | +4.488 ms |