Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -9726577.713 ms |
| Heart (set every hour) | -14115.020 ms |
| Raw crystal (set once) | +12345.892 ms |
| Raw crystal (set every hour) | +23.906 ms |
| This machine's own clock | -0.445 ms |
| Heart time lost to host stalls | +9738907.068 ms |
| Atomic round trip | +9.370 ms |