Each clock against atomic time (pool.ntp.org), sampled every 30 s.
| Heart (set once) | -7281179.053 ms |
| Heart (set every hour) | -47328.019 ms |
| Raw crystal (set once) | +10910.263 ms |
| Raw crystal (set every hour) | +30.327 ms |
| This machine's own clock | +0.117 ms |
| Heart time lost to host stalls | +7292079.892 ms |
| Atomic round trip | +4.754 ms |