Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -453905.176 ms |
| Heart (set every hour) | -3308.902 ms |
| Raw crystal (set once) | +2290.863 ms |
| Raw crystal (set every hour) | +24.215 ms |
| This machine's own clock | -0.862 ms |
| Heart time lost to host stalls | +456194.982 ms |
| Atomic round trip | +4.609 ms |