Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -775085.074 ms |
| Heart (set every hour) | -8047.204 ms |
| Raw crystal (set once) | +3841.226 ms |
| Raw crystal (set every hour) | +26.806 ms |
| This machine's own clock | -0.107 ms |
| Heart time lost to host stalls | +778925.535 ms |
| Atomic round trip | +5.538 ms |