Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -2616054.715 ms |
| Heart (set every hour) | -17154.025 ms |
| Raw crystal (set once) | +6608.685 ms |
| Raw crystal (set every hour) | +24.860 ms |
| This machine's own clock | -3.848 ms |
| Heart time lost to host stalls | +2622672.309 ms |
| Atomic round trip | +9.533 ms |