Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -11724494.786 ms |
| Heart (set every hour) | -27847.912 ms |
| Raw crystal (set once) | +14996.425 ms |
| Raw crystal (set every hour) | +22.617 ms |
| This machine's own clock | +0.554 ms |
| Heart time lost to host stalls | +11739476.747 ms |
| Atomic round trip | +11.316 ms |