Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -48363.929 ms |
| Heart (set every hour) | -10674.800 ms |
| Raw crystal (set once) | +189.837 ms |
| Raw crystal (set every hour) | +46.038 ms |
| This machine's own clock | -0.593 ms |
| Heart time lost to host stalls | +48553.789 ms |
| Atomic round trip | +5.202 ms |