Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -677334.617 ms |
| Heart (set every hour) | -6260.821 ms |
| Raw crystal (set once) | +3360.655 ms |
| Raw crystal (set every hour) | +33.481 ms |
| This machine's own clock | +0.333 ms |
| Heart time lost to host stalls | +680694.401 ms |
| Atomic round trip | +4.958 ms |