Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -6844923.998 ms |
| Heart (set every hour) | -10676.854 ms |
| Raw crystal (set once) | +10616.474 ms |
| Raw crystal (set every hour) | +17.522 ms |
| This machine's own clock | -0.960 ms |
| Heart time lost to host stalls | +6855532.584 ms |
| Atomic round trip | +4.082 ms |