Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -4432376.765 ms |
| Heart (set every hour) | -20318.177 ms |
| Raw crystal (set once) | +8153.724 ms |
| Raw crystal (set every hour) | +31.084 ms |
| This machine's own clock | +0.437 ms |
| Heart time lost to host stalls | +4440535.269 ms |
| Atomic round trip | +4.795 ms |