Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -5511982.845 ms |
| Heart (set every hour) | -37207.802 ms |
| Raw crystal (set once) | +9382.677 ms |
| Raw crystal (set every hour) | +22.953 ms |
| This machine's own clock | -0.733 ms |
| Heart time lost to host stalls | +5521363.986 ms |
| Atomic round trip | +5.299 ms |