Each clock against atomic time (pool.ntp.org), sampled every 30 s.
| Heart (set once) | -9193132.727 ms |
| Heart (set every hour) | -43332.391 ms |
| Raw crystal (set once) | +11875.257 ms |
| Raw crystal (set every hour) | +22.632 ms |
| This machine's own clock | -6.802 ms |
| Heart time lost to host stalls | +9204993.762 ms |
| Atomic round trip | +7.559 ms |