Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -9652836.668 ms |
| Heart (set every hour) | -26933.331 ms |
| Raw crystal (set once) | +12250.749 ms |
| Raw crystal (set every hour) | +22.795 ms |
| This machine's own clock | -2.885 ms |
| Heart time lost to host stalls | +9665071.290 ms |
| Atomic round trip | +8.963 ms |