Each clock against atomic time (pool.ntp.org), sampled every 30 s.
| Heart (set once) | -1267664.198 ms |
| Heart (set every hour) | -43068.434 ms |
| Raw crystal (set once) | +5091.554 ms |
| Raw crystal (set every hour) | +29.582 ms |
| This machine's own clock | +1.416 ms |
| Heart time lost to host stalls | +1272759.262 ms |
| Atomic round trip | +11.607 ms |