Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -9996394.848 ms |
| Heart (set every hour) | -29246.851 ms |
| Raw crystal (set once) | +12734.268 ms |
| Raw crystal (set every hour) | +30.784 ms |
| This machine's own clock | -0.783 ms |
| Heart time lost to host stalls | +10009110.548 ms |
| Atomic round trip | +9.347 ms |