Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -2676039.169 ms |
| Heart (set every hour) | -20190.726 ms |
| Raw crystal (set once) | +6708.369 ms |
| Raw crystal (set every hour) | +27.894 ms |
| This machine's own clock | -1.552 ms |
| Heart time lost to host stalls | +2682756.792 ms |
| Atomic round trip | +9.159 ms |