Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -9351985.554 ms |
| Heart (set every hour) | -29536.061 ms |
| Raw crystal (set once) | +11966.275 ms |
| Raw crystal (set every hour) | +18.824 ms |
| This machine's own clock | +5.095 ms |
| Heart time lost to host stalls | +9363937.156 ms |
| Atomic round trip | +6.154 ms |