Each clock against atomic time (time.google.com), sampled every 30 s.
| Heart (set once) | -3989446.854 ms |
| Heart (set every hour) | -40268.097 ms |
| Raw crystal (set once) | +7579.404 ms |
| Raw crystal (set every hour) | +34.534 ms |
| This machine's own clock | +0.581 ms |
| Heart time lost to host stalls | +3997033.977 ms |
| Atomic round trip | +14.061 ms |