Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -3661697.759 ms |
| Heart (set every hour) | -50267.914 ms |
| Raw crystal (set once) | +7387.430 ms |
| Raw crystal (set every hour) | +30.390 ms |
| This machine's own clock | -0.275 ms |
| Heart time lost to host stalls | +3669093.864 ms |
| Atomic round trip | +10.250 ms |