Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -8781968.327 ms |
| Heart (set every hour) | -47480.715 ms |
| Raw crystal (set once) | +11684.645 ms |
| Raw crystal (set every hour) | +25.934 ms |
| This machine's own clock | -1.923 ms |
| Heart time lost to host stalls | +8793639.710 ms |
| Atomic round trip | +4.677 ms |