Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -7440214.973 ms |
| Heart (set every hour) | -54370.644 ms |
| Raw crystal (set once) | +11013.866 ms |
| Raw crystal (set every hour) | +32.079 ms |
| This machine's own clock | -0.479 ms |
| Heart time lost to host stalls | +7451218.882 ms |
| Atomic round trip | +6.390 ms |