Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -573003.495 ms |
| Heart (set every hour) | -7367.479 ms |
| Raw crystal (set once) | +2872.192 ms |
| Raw crystal (set every hour) | +29.827 ms |
| This machine's own clock | -5.297 ms |
| Heart time lost to host stalls | +575874.233 ms |
| Atomic round trip | +4.379 ms |