Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -12016006.630 ms |
| Heart (set every hour) | -26196.134 ms |
| Raw crystal (set once) | +15294.862 ms |
| Raw crystal (set every hour) | +34.810 ms |
| This machine's own clock | -1.027 ms |
| Heart time lost to host stalls | +12031290.680 ms |
| Atomic round trip | +6.592 ms |