Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -4602605.908 ms |
| Heart (set every hour) | -22343.235 ms |
| Raw crystal (set once) | +8338.352 ms |
| Raw crystal (set every hour) | +24.023 ms |
| This machine's own clock | -2.272 ms |
| Heart time lost to host stalls | +4610948.175 ms |
| Atomic round trip | +8.651 ms |