Pancasila Sanctity Day is a national day in Indonesia which is commemorated every October 1 in accordance with Presidential Decree No. 153 / 1967. This occurred after the September 30 Movement Incident, better known as G30S / PKI.

Where it is known that during the 30S / PKI incident, six generals and several other people were massacred by a group of people who according to military authorities at that time were the Indonesian Communist Party. The turmoil that arose as a result of the G30S / PKI itself was finally suppressed by the Indonesian military authorities, so that it was called the Pancasila Sanctity Day.