Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -10124484.576 ms |
| Heart (set every hour) | -11260.186 ms |
| Raw crystal (set once) | +12919.856 ms |
| Raw crystal (set every hour) | +23.002 ms |
| This machine's own clock | -2.230 ms |
| Heart time lost to host stalls | +10137384.811 ms |
| Atomic round trip | +6.377 ms |