Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -285130.178 ms |
| Heart (set every hour) | -3271.761 ms |
| Raw crystal (set once) | +1412.652 ms |
| Raw crystal (set every hour) | +14.999 ms |
| This machine's own clock | -0.342 ms |
| Heart time lost to host stalls | +286542.483 ms |
| Atomic round trip | +4.811 ms |