Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -617785.383 ms |
| Heart (set every hour) | -8251.025 ms |
| Raw crystal (set once) | +3068.736 ms |
| Raw crystal (set every hour) | +33.027 ms |
| This machine's own clock | +4.752 ms |
| Heart time lost to host stalls | +620852.450 ms |
| Atomic round trip | +6.295 ms |