Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -4365406.503 ms |
| Heart (set every hour) | -29770.147 ms |
| Raw crystal (set once) | +8057.148 ms |
| Raw crystal (set every hour) | +29.898 ms |
| This machine's own clock | -2.563 ms |
| Heart time lost to host stalls | +4373468.907 ms |
| Atomic round trip | +5.750 ms |