Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -6379575.802 ms |
| Heart (set every hour) | -42116.915 ms |
| Raw crystal (set once) | +10248.216 ms |
| Raw crystal (set every hour) | +35.129 ms |
| This machine's own clock | +0.114 ms |
| Heart time lost to host stalls | +6389817.983 ms |
| Atomic round trip | +9.506 ms |