Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -1060027.482 ms |
| Heart (set every hour) | -9675.790 ms |
| Raw crystal (set once) | +4608.596 ms |
| Raw crystal (set every hour) | +25.175 ms |
| This machine's own clock | +2.170 ms |
| Heart time lost to host stalls | +1064637.866 ms |
| Atomic round trip | +9.232 ms |