Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -10420481.775 ms |
| Heart (set every hour) | -15156.882 ms |
| Raw crystal (set once) | +13286.189 ms |
| Raw crystal (set every hour) | +15.112 ms |
| This machine's own clock | -0.834 ms |
| Heart time lost to host stalls | +10433746.433 ms |
| Atomic round trip | +8.498 ms |