Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -9784661.925 ms |
| Heart (set every hour) | -14584.199 ms |
| Raw crystal (set once) | +12442.202 ms |
| Raw crystal (set every hour) | +23.601 ms |
| This machine's own clock | -0.175 ms |
| Heart time lost to host stalls | +9797087.003 ms |
| Atomic round trip | +4.150 ms |