Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -393937.002 ms |
| Heart (set every hour) | -10170.956 ms |
| Raw crystal (set once) | +2002.536 ms |
| Raw crystal (set every hour) | +25.161 ms |
| This machine's own clock | +0.450 ms |
| Heart time lost to host stalls | +395938.714 ms |
| Atomic round trip | +4.317 ms |