Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -5106688.566 ms |
| Heart (set every hour) | -16719.713 ms |
| Raw crystal (set once) | +8896.556 ms |
| Raw crystal (set every hour) | +19.893 ms |
| This machine's own clock | -1.835 ms |
| Heart time lost to host stalls | +5115586.374 ms |
| Atomic round trip | +4.239 ms |