Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -550942.719 ms |
| Heart (set every hour) | -4681.469 ms |
| Raw crystal (set once) | +2767.480 ms |
| Raw crystal (set every hour) | +19.926 ms |
| This machine's own clock | -0.614 ms |
| Heart time lost to host stalls | +553708.758 ms |
| Atomic round trip | +4.768 ms |