Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -4.477 ms |
| Heart (set every hour) | -1.295 ms |
| Raw crystal (set once) | -4.481 ms |
| Raw crystal (set every hour) | -1.302 ms |
| This machine's own clock | +8.096 ms |
| Heart time lost to host stalls | +0.000 ms |
| Atomic round trip | +2.164 ms |