Each clock against atomic time (time.google.com), sampled every 30 s.
| Heart (set once) | -4105180.358 ms |
| Heart (set every hour) | -29495.813 ms |
| Raw crystal (set once) | +7676.826 ms |
| Raw crystal (set every hour) | +33.317 ms |
| This machine's own clock | +0.723 ms |
| Heart time lost to host stalls | +4112864.382 ms |
| Atomic round trip | +14.432 ms |