Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -2388571.280 ms |
| Heart (set every hour) | -22933.377 ms |
| Raw crystal (set once) | +6315.862 ms |
| Raw crystal (set every hour) | +18.576 ms |
| This machine's own clock | -1.871 ms |
| Heart time lost to host stalls | +2394895.015 ms |
| Atomic round trip | +8.487 ms |