Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -5024495.637 ms |
| Heart (set every hour) | -25114.360 ms |
| Raw crystal (set once) | +8804.135 ms |
| Raw crystal (set every hour) | +24.226 ms |
| This machine's own clock | +7.465 ms |
| Heart time lost to host stalls | +5033301.158 ms |
| Atomic round trip | +7.035 ms |