Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -105891.473 ms |
| Heart (set every hour) | -17169.312 ms |
| Raw crystal (set once) | +408.466 ms |
| Raw crystal (set every hour) | +23.078 ms |
| This machine's own clock | -3.822 ms |
| Heart time lost to host stalls | +106299.912 ms |
| Atomic round trip | +12.845 ms |