Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -8318946.109 ms |
| Heart (set every hour) | -40811.395 ms |
| Raw crystal (set once) | +11493.770 ms |
| Raw crystal (set every hour) | +29.498 ms |
| This machine's own clock | +4.695 ms |
| Heart time lost to host stalls | +8330427.586 ms |
| Atomic round trip | +53.483 ms |