Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -1031324.039 ms |
| Heart (set every hour) | -5371.962 ms |
| Raw crystal (set once) | +4504.295 ms |
| Raw crystal (set every hour) | +18.399 ms |
| This machine's own clock | -2.157 ms |
| Heart time lost to host stalls | +1035829.760 ms |
| Atomic round trip | +4.855 ms |