Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -5799150.609 ms |
| Heart (set every hour) | -21201.965 ms |
| Raw crystal (set once) | +9668.530 ms |
| Raw crystal (set every hour) | +24.973 ms |
| This machine's own clock | -18.170 ms |
| Heart time lost to host stalls | +5808816.086 ms |
| Atomic round trip | +4.274 ms |