Each clock against atomic time (pool.ntp.org), sampled every 30 s.
| Heart (set once) | -9998.797 ms |
| Heart (set every hour) | -4846.123 ms |
| Raw crystal (set once) | +135.865 ms |
| Raw crystal (set every hour) | +36.935 ms |
| This machine's own clock | +2.328 ms |
| Heart time lost to host stalls | +10134.683 ms |
| Atomic round trip | +6.684 ms |