Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -10829176.160 ms |
| Heart (set every hour) | -26340.622 ms |
| Raw crystal (set once) | +13875.366 ms |
| Raw crystal (set every hour) | +36.051 ms |
| This machine's own clock | -0.818 ms |
| Heart time lost to host stalls | +10843026.927 ms |
| Atomic round trip | +5.635 ms |