Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -10078804.756 ms |
| Heart (set every hour) | -18986.753 ms |
| Raw crystal (set once) | +12832.669 ms |
| Raw crystal (set every hour) | +31.825 ms |
| This machine's own clock | -0.719 ms |
| Heart time lost to host stalls | +10091618.262 ms |
| Atomic round trip | +10.861 ms |