Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -3026438.534 ms |
| Heart (set every hour) | -24185.967 ms |
| Raw crystal (set once) | +7092.394 ms |
| Raw crystal (set every hour) | +22.538 ms |
| This machine's own clock | -1.196 ms |
| Heart time lost to host stalls | +3033541.181 ms |
| Atomic round trip | +5.282 ms |