Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -5605000.196 ms |
| Heart (set every hour) | -17015.808 ms |
| Raw crystal (set once) | +9476.073 ms |
| Raw crystal (set every hour) | +20.287 ms |
| This machine's own clock | +0.419 ms |
| Heart time lost to host stalls | +5614474.256 ms |
| Atomic round trip | +9.723 ms |