Each clock against atomic time (time.cloudflare.com), sampled every 30 s.
| Heart (set once) | -12539577.094 ms |
| Heart (set every hour) | -36499.136 ms |
| Raw crystal (set once) | +15708.408 ms |
| Raw crystal (set every hour) | +27.328 ms |
| This machine's own clock | -5.265 ms |
| Heart time lost to host stalls | +12555279.776 ms |
| Atomic round trip | +13.609 ms |