Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -4866149.681 ms |
| Heart (set every hour) | -32023.174 ms |
| Raw crystal (set once) | +8627.313 ms |
| Raw crystal (set every hour) | +32.286 ms |
| This machine's own clock | -0.505 ms |
| Heart time lost to host stalls | +4874779.304 ms |
| Atomic round trip | +8.673 ms |