Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -807983.150 ms |
| Heart (set every hour) | -12676.336 ms |
| Raw crystal (set once) | +3943.219 ms |
| Raw crystal (set every hour) | +33.416 ms |
| This machine's own clock | -0.645 ms |
| Heart time lost to host stalls | +811925.817 ms |
| Atomic round trip | +7.010 ms |