Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -6093688.284 ms |
| Heart (set every hour) | -27438.062 ms |
| Raw crystal (set once) | +9948.676 ms |
| Raw crystal (set every hour) | +22.874 ms |
| This machine's own clock | -1.791 ms |
| Heart time lost to host stalls | +6103632.448 ms |
| Atomic round trip | +5.814 ms |