Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -10704733.433 ms |
| Heart (set every hour) | -18485.016 ms |
| Raw crystal (set once) | +13680.497 ms |
| Raw crystal (set every hour) | +30.264 ms |
| This machine's own clock | +1.081 ms |
| Heart time lost to host stalls | +10718390.348 ms |
| Atomic round trip | +4.374 ms |