how often are the nobel prizes awarded

The Nobel Prizes are awarded annually. The announcements of the laureates typically occur during the first two weeks of October, with the award ceremonies held on December 10, the anniversary of Alfred Nobel's death. The prizes cover six categories: Physics, Chemistry, Physiology or Medicine, Literature, Peace, and Economic Sciences. Each of these prizes is generally awarded once every year, except in extraordinary circumstances such as wars or when no suitable candidates can be found. The announcement schedule follows a sequence over about a week, with each prize declared on a specific day.