Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -11798521.929 ms |
| Heart (set every hour) | -20435.236 ms |
| Raw crystal (set once) | +15101.153 ms |
| Raw crystal (set every hour) | +30.311 ms |
| This machine's own clock | -1.109 ms |
| Heart time lost to host stalls | +11813609.851 ms |
| Atomic round trip | +4.952 ms |