Each clock against atomic time (pool.ntp.org), sampled every 30 s.
| Heart (set once) | -748915.756 ms |
| Heart (set every hour) | -4013.231 ms |
| Raw crystal (set once) | +3741.579 ms |
| Raw crystal (set every hour) | +24.140 ms |
| This machine's own clock | -1.718 ms |
| Heart time lost to host stalls | +752656.058 ms |
| Atomic round trip | +4.405 ms |