Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -2566090.451 ms |
| Heart (set every hour) | -21495.863 ms |
| Raw crystal (set once) | +6522.488 ms |
| Raw crystal (set every hour) | +35.609 ms |
| This machine's own clock | -1.810 ms |
| Heart time lost to host stalls | +2572621.536 ms |
| Atomic round trip | +8.306 ms |