National Health Day is observed in Indonesia every November 12. This observance commemorates the launch of a malaria eradication project by Sukarno in 1959, which began with the spraying of DDT in Kalasan to eliminate Anopheles mosquitoes. The day aims to highlight urgent public health issues in the country, including malaria, unsafe drinking water, HIV/AIDS, and respiratory diseases exacerbated by air pollution. Indonesia's government is committed to eradicating malaria by 2030. National Health Day serves to emphasize the importance of improving the healthcare system and to express gratitude to health workers for their dedication. The observance reflects ongoing efforts to address significant health challenges faced by the Indonesian population.