Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -5906521.044 ms |
| Heart (set every hour) | -40522.886 ms |
| Raw crystal (set once) | +9766.846 ms |
| Raw crystal (set every hour) | +25.916 ms |
| This machine's own clock | -1.332 ms |
| Heart time lost to host stalls | +5916284.371 ms |
| Atomic round trip | +6.776 ms |