Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -897360.170 ms |
| Heart (set every hour) | -8519.597 ms |
| Raw crystal (set once) | +4240.206 ms |
| Raw crystal (set every hour) | +44.317 ms |
| This machine's own clock | -0.557 ms |
| Heart time lost to host stalls | +901600.872 ms |
| Atomic round trip | +9.322 ms |