Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -10263727.419 ms |
| Heart (set every hour) | -24089.432 ms |
| Raw crystal (set once) | +13108.979 ms |
| Raw crystal (set every hour) | +26.234 ms |
| This machine's own clock | +0.311 ms |
| Heart time lost to host stalls | +10276815.786 ms |
| Atomic round trip | +7.024 ms |