Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -367568.663 ms |
| Heart (set every hour) | -2231.143 ms |
| Raw crystal (set once) | +1895.310 ms |
| Raw crystal (set every hour) | +15.658 ms |
| This machine's own clock | -0.452 ms |
| Heart time lost to host stalls | +369463.239 ms |
| Atomic round trip | +5.420 ms |