Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -5264163.775 ms |
| Heart (set every hour) | -26119.786 ms |
| Raw crystal (set once) | +9103.048 ms |
| Raw crystal (set every hour) | +33.819 ms |
| This machine's own clock | -0.200 ms |
| Heart time lost to host stalls | +5273266.842 ms |
| Atomic round trip | +7.663 ms |