1. In 1868, Idaho was still a territory, and on April 28 of that year, the territorial governor approved the creation of the Idaho Agricultural College in Moscow. Today, that college is known as the University of Idaho.

2. On April 28, 1914, the town of Dover experienced an earthquake with a magnitude of 4.4. It caused minor damage and was felt throughout the region.

3. In 1947, the Idaho State Capitol was damaged by a fire that started in the dome. The damage was extensive, but luckily there were no fatalities. The fire forced many state offices to relocate until repairs were completed.

4. On April 28, 1986, the Idaho House of Representatives approved a bill that allowed concealed carry of firearms. It was controversial at the time and remains so to this day.

5. In 2007, the Idaho State Legislature passed a law that standardized daylight saving time across the state. Prior to that, some counties had opted out of daylight saving time, causing confusion and inconvenience for those traveling between counties.