Each clock against atomic time (pool.ntp.org), sampled every 30 s.
| Heart (set once) | -10757341.414 ms |
| Heart (set every hour) | -19374.460 ms |
| Raw crystal (set once) | +13773.856 ms |
| Raw crystal (set every hour) | +29.410 ms |
| This machine's own clock | -0.496 ms |
| Heart time lost to host stalls | +10771091.197 ms |
| Atomic round trip | +3.150 ms |