Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -1988992.188 ms |
| Heart (set every hour) | -27773.679 ms |
| Raw crystal (set once) | +5943.262 ms |
| Raw crystal (set every hour) | +26.067 ms |
| This machine's own clock | -0.896 ms |
| Heart time lost to host stalls | +1994942.417 ms |
| Atomic round trip | +5.004 ms |