Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -5182579.052 ms |
| Heart (set every hour) | -31090.829 ms |
| Raw crystal (set once) | +9005.372 ms |
| Raw crystal (set every hour) | +31.896 ms |
| This machine's own clock | +5.334 ms |
| Heart time lost to host stalls | +5191584.816 ms |
| Atomic round trip | +9.585 ms |