Each clock against atomic time (time.google.com), sampled every 30 s.
| Heart (set once) | -3127219.069 ms |
| Heart (set every hour) | -11047.204 ms |
| Raw crystal (set once) | +7180.335 ms |
| Raw crystal (set every hour) | +13.848 ms |
| This machine's own clock | +11.801 ms |
| Heart time lost to host stalls | +3134409.136 ms |
| Atomic round trip | +15.917 ms |