Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -12610568.012 ms |
| Heart (set every hour) | -26247.329 ms |
| Raw crystal (set once) | +15817.444 ms |
| Raw crystal (set every hour) | +39.258 ms |
| This machine's own clock | -1.631 ms |
| Heart time lost to host stalls | +12626381.016 ms |
| Atomic round trip | +6.322 ms |