Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -11498125.097 ms |
| Heart (set every hour) | -17538.304 ms |
| Raw crystal (set once) | +14711.288 ms |
| Raw crystal (set every hour) | +24.792 ms |
| This machine's own clock | -0.652 ms |
| Heart time lost to host stalls | +11512818.411 ms |
| Atomic round trip | +5.408 ms |