Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -6285675.754 ms |
| Heart (set every hour) | -41776.018 ms |
| Raw crystal (set once) | +10150.353 ms |
| Raw crystal (set every hour) | +33.584 ms |
| This machine's own clock | -8.605 ms |
| Heart time lost to host stalls | +6295821.000 ms |
| Atomic round trip | +5.246 ms |