Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -348777.650 ms |
| Heart (set every hour) | -8959.856 ms |
| Raw crystal (set once) | +808.636 ms |
| Raw crystal (set every hour) | +40.016 ms |
| This machine's own clock | -0.816 ms |
| Heart time lost to host stalls | +349586.334 ms |
| Atomic round trip | +9.162 ms |