Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -2495562.611 ms |
| Heart (set every hour) | -9449.158 ms |
| Raw crystal (set once) | +6409.101 ms |
| Raw crystal (set every hour) | +16.038 ms |
| This machine's own clock | -1.187 ms |
| Heart time lost to host stalls | +2501979.917 ms |
| Atomic round trip | +5.883 ms |