Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -381733.373 ms |
| Heart (set every hour) | -12573.570 ms |
| Raw crystal (set once) | +912.024 ms |
| Raw crystal (set every hour) | +47.526 ms |
| This machine's own clock | +2.334 ms |
| Heart time lost to host stalls | +382645.443 ms |
| Atomic round trip | +5.285 ms |