Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -82784.338 ms |
| Heart (set every hour) | -5336.282 ms |
| Raw crystal (set once) | +353.439 ms |
| Raw crystal (set every hour) | +17.842 ms |
| This machine's own clock | -2.301 ms |
| Heart time lost to host stalls | +83137.760 ms |
| Atomic round trip | +8.348 ms |