Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -318787.710 ms |
| Heart (set every hour) | -5109.584 ms |
| Raw crystal (set once) | +1617.579 ms |
| Raw crystal (set every hour) | +26.860 ms |
| This machine's own clock | -1.637 ms |
| Heart time lost to host stalls | +320405.147 ms |
| Atomic round trip | +5.944 ms |