Each clock against atomic time (time.google.com), sampled every 30 s.
| Heart (set once) | -3386932.570 ms |
| Heart (set every hour) | -81582.844 ms |
| Raw crystal (set once) | +7289.502 ms |
| Raw crystal (set every hour) | +26.743 ms |
| This machine's own clock | +1.049 ms |
| Heart time lost to host stalls | +3394231.248 ms |
| Atomic round trip | +14.069 ms |