Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -6930991.685 ms |
| Heart (set every hour) | -36833.788 ms |
| Raw crystal (set once) | +10715.482 ms |
| Raw crystal (set every hour) | +22.563 ms |
| This machine's own clock | -4.191 ms |
| Heart time lost to host stalls | +6941698.842 ms |
| Atomic round trip | +11.936 ms |