Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -12352914.528 ms |
| Heart (set every hour) | -53401.477 ms |
| Raw crystal (set once) | +15567.624 ms |
| Raw crystal (set every hour) | +27.070 ms |
| This machine's own clock | +1.001 ms |
| Heart time lost to host stalls | +12368474.645 ms |
| Atomic round trip | +6.043 ms |