Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -732755.882 ms |
| Heart (set every hour) | -5590.726 ms |
| Raw crystal (set once) | +3644.821 ms |
| Raw crystal (set every hour) | +24.672 ms |
| This machine's own clock | -1.376 ms |
| Heart time lost to host stalls | +736399.099 ms |
| Atomic round trip | +4.706 ms |