Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -1140939.470 ms |
| Heart (set every hour) | -9059.916 ms |
| Raw crystal (set once) | +4904.584 ms |
| Raw crystal (set every hour) | +30.200 ms |
| This machine's own clock | -5.171 ms |
| Heart time lost to host stalls | +1145846.896 ms |
| Atomic round trip | +9.704 ms |