Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -4177896.742 ms |
| Heart (set every hour) | -23678.710 ms |
| Raw crystal (set once) | +7769.923 ms |
| Raw crystal (set every hour) | +33.492 ms |
| This machine's own clock | -1.887 ms |
| Heart time lost to host stalls | +4185673.464 ms |
| Atomic round trip | +5.451 ms |