Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -8598821.061 ms |
| Heart (set every hour) | -107934.712 ms |
| Raw crystal (set once) | +11594.534 ms |
| Raw crystal (set every hour) | +32.271 ms |
| This machine's own clock | +1.558 ms |
| Heart time lost to host stalls | +8610402.772 ms |
| Atomic round trip | +14.639 ms |