1. On April 4, 1892, the first official game of baseball was played in Hawaii. The game was played between a team of soldiers from the USS Charleston and a team of Hawaiian players.

2. On April 4, 1945, the USS Blackfin, a submarine of the United States Navy, sank the Japanese freighter, the Yoko Maru, off the coast of Oahu. The Yoko Maru was carrying supplies and ammunition to Japanese forces in the Pacific theater.

3. On April 4, 1959, Hawaii became the 50th state to join the United States of America. The history-making event was marked by a huge celebration in Honolulu, attended by thousands of people.

4. On April 4, 1985, a major earthquake struck the island of Hawaii. Measuring 6.7 on the Richter scale, it caused significant damage to buildings and infrastructure, particularly in the town of Kalapana.

5. On April 4, 2011, the Kilauea volcano on the Big Island of Hawaii began a new eruption, which would continue for several months. The eruption caused widespread disruption to local communities, with roads and infrastructure destroyed, and many residents forced to evacuate their homes.