Each clock against atomic time (pool.ntp.org), sampled every 30 s.
| Heart (set once) | -517416.940 ms |
| Heart (set every hour) | -3926.591 ms |
| Raw crystal (set once) | +2581.535 ms |
| Raw crystal (set every hour) | +25.093 ms |
| This machine's own clock | +1.324 ms |
| Heart time lost to host stalls | +519997.213 ms |
| Atomic round trip | +12.255 ms |