Each clock against atomic time (time.google.com), sampled every 30 s.
| Heart (set once) | -5697292.794 ms |
| Heart (set every hour) | -21350.168 ms |
| Raw crystal (set once) | +9572.318 ms |
| Raw crystal (set every hour) | +21.469 ms |
| This machine's own clock | +4.891 ms |
| Heart time lost to host stalls | +5706863.021 ms |
| Atomic round trip | +13.707 ms |