Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -11920537.405 ms |
| Heart (set every hour) | -67287.959 ms |
| Raw crystal (set once) | +15192.819 ms |
| Raw crystal (set every hour) | +27.426 ms |
| This machine's own clock | -5.366 ms |
| Heart time lost to host stalls | +11935718.114 ms |
| Atomic round trip | +11.704 ms |