Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -718575.903 ms |
| Heart (set every hour) | -8985.294 ms |
| Raw crystal (set once) | +3556.997 ms |
| Raw crystal (set every hour) | +34.328 ms |
| This machine's own clock | -0.940 ms |
| Heart time lost to host stalls | +722130.982 ms |
| Atomic round trip | +4.982 ms |