Each clock against atomic time (time.google.com), sampled every 30 s.
| Heart (set once) | -5353323.533 ms |
| Heart (set every hour) | -10996.574 ms |
| Raw crystal (set once) | +9233.546 ms |
| Raw crystal (set every hour) | +19.308 ms |
| This machine's own clock | -3.011 ms |
| Heart time lost to host stalls | +5362556.272 ms |
| Atomic round trip | +14.644 ms |