Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -10887552.411 ms |
| Heart (set every hour) | -17966.215 ms |
| Raw crystal (set once) | +13966.987 ms |
| Raw crystal (set every hour) | +33.968 ms |
| This machine's own clock | -4.107 ms |
| Heart time lost to host stalls | +10901494.432 ms |
| Atomic round trip | +7.975 ms |