Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -1697439.417 ms |
| Heart (set every hour) | -24466.326 ms |
| Raw crystal (set once) | +5573.174 ms |
| Raw crystal (set every hour) | +36.242 ms |
| This machine's own clock | -0.656 ms |
| Heart time lost to host stalls | +1703017.813 ms |
| Atomic round trip | +5.036 ms |