Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -1742621.326 ms |
| Heart (set every hour) | -19297.621 ms |
| Raw crystal (set once) | +5661.096 ms |
| Raw crystal (set every hour) | +28.755 ms |
| This machine's own clock | -5.599 ms |
| Heart time lost to host stalls | +1748287.972 ms |
| Atomic round trip | +13.913 ms |