Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -7115011.460 ms |
| Heart (set every hour) | -64943.017 ms |
| Raw crystal (set once) | +10821.705 ms |
| Raw crystal (set every hour) | +33.322 ms |
| This machine's own clock | -1.178 ms |
| Heart time lost to host stalls | +7125824.207 ms |
| Atomic round trip | +6.470 ms |