Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -10352408.061 ms |
| Heart (set every hour) | -16638.029 ms |
| Raw crystal (set once) | +13197.721 ms |
| Raw crystal (set every hour) | +17.508 ms |
| This machine's own clock | -0.830 ms |
| Heart time lost to host stalls | +10365584.733 ms |
| Atomic round trip | +7.947 ms |