Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -1113329.742 ms |
| Heart (set every hour) | -6761.898 ms |
| Raw crystal (set once) | +4800.243 ms |
| Raw crystal (set every hour) | +22.310 ms |
| This machine's own clock | -1.390 ms |
| Heart time lost to host stalls | +1118132.455 ms |
| Atomic round trip | +12.464 ms |