Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -64767.278 ms |
| Heart (set every hour) | -3826.464 ms |
| Raw crystal (set once) | +260.558 ms |
| Raw crystal (set every hour) | +20.221 ms |
| This machine's own clock | -0.332 ms |
| Heart time lost to host stalls | +65027.850 ms |
| Atomic round trip | +4.130 ms |