Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -154796.275 ms |
| Heart (set every hour) | -4824.958 ms |
| Raw crystal (set once) | +646.170 ms |
| Raw crystal (set every hour) | +26.022 ms |
| This machine's own clock | +0.165 ms |
| Heart time lost to host stalls | +155442.466 ms |
| Atomic round trip | +4.298 ms |