Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -4795964.768 ms |
| Heart (set every hour) | -21669.195 ms |
| Raw crystal (set once) | +8540.965 ms |
| Raw crystal (set every hour) | +38.130 ms |
| This machine's own clock | -0.977 ms |
| Heart time lost to host stalls | +4804508.481 ms |
| Atomic round trip | +8.114 ms |