Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -5323511.960 ms |
| Heart (set every hour) | -14140.418 ms |
| Raw crystal (set once) | +9189.473 ms |
| Raw crystal (set every hour) | +23.463 ms |
| This machine's own clock | -1.242 ms |
| Heart time lost to host stalls | +5332700.840 ms |
| Atomic round trip | +4.836 ms |