Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -11443880.408 ms |
| Heart (set every hour) | -14738.158 ms |
| Raw crystal (set once) | +14618.723 ms |
| Raw crystal (set every hour) | +27.618 ms |
| This machine's own clock | -2.586 ms |
| Heart time lost to host stalls | +11458479.987 ms |
| Atomic round trip | +10.000 ms |