Each clock against atomic time (pool.ntp.org), sampled every 30 s.
| Heart (set once) | -6767618.312 ms |
| Heart (set every hour) | -38581.166 ms |
| Raw crystal (set once) | +10527.841 ms |
| Raw crystal (set every hour) | +27.331 ms |
| This machine's own clock | -1.799 ms |
| Heart time lost to host stalls | +6778138.698 ms |
| Atomic round trip | +14.511 ms |