Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -46852.073 ms |
| Heart (set every hour) | -7768.229 ms |
| Raw crystal (set once) | +319.526 ms |
| Raw crystal (set every hour) | +29.640 ms |
| This machine's own clock | +0.094 ms |
| Heart time lost to host stalls | +47171.576 ms |
| Atomic round trip | +4.422 ms |