Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -264.132 ms |
| Heart (set every hour) | -5.700 ms |
| Raw crystal (set once) | -264.055 ms |
| Raw crystal (set every hour) | -5.697 ms |
| This machine's own clock | -0.232 ms |
| Heart time lost to host stalls | +0.000 ms |
| Atomic round trip | +1.436 ms |