Flag of Indonesia

The Flag of Indonesia is a bicolour flag with two equal horizontal bands of red (top) and white (bottom) with an overall ratio of 2:3.

Indonesia

Name	Sang Saka Merah-Putih Bendera Merah-Putih Merah-Putih
Use	National flag and ensign
Proportion	2:3
Adopted	13th century (Majapahit Empire) 28 October 1928 (standardized) 17 August 1945 (original) 17 August 1950 (official)
Design	A horizontal bicolour of red and white
Designed by	Fatmawati
Variant flag of Indonesia
Name	Ular-Ular Perang or Lencana Perang
Use	Naval jack
Proportion	2:3
Design	Nine horizontal stripes of alternating red and white

The flag of Indonesia is graphically identical to the Flag of Monaco, with a slight difference only in the ratio of its dimensions.

Usage

The Indonesian flag of Ular-Ular Perang variant used by Indonesian Navy

Regulation and flag protocol

The flag is described in Article 35, Chapter XV, of the Constitution of Indonesia; Government Regulation No. 24/2009; and Government Regulation No. 40/1958.^[1]

The national flag shall be Sang Merah Putih (The Red-White)

— Article 35, Chapter XV, Constitution of Indonesia^[2]

The raising of the flag should be conducted in the time between sunrise until sunset, but in certain circumstances, it can be done at night. In daily use, the flag should be flown at every commemoration such as the Indonesian Independence Day on 17 August every year, by the citizens who have a right to use it at house, building or office, schools, colleges, public and private transport and the representative office of Indonesia in overseas. The flag can be flown in maritime-based activity as well.

Indonesian sail training ship KRI Dewaruci at Sailabration 2012, Baltimore Inner Harbor, Maryland, USA

Indonesian Navy Ship with the flag of Indonesia flown (Ular-Ular Perang variant)

It can be used as the cover of the coffin of a President or former Presidents, Vice President or former Vice Presidents, Members of Cabinet, Speaker of People's Representative Council, and Head of Government, members of the Indonesian Armed Forces, and persons who are members of the Indonesian National Police who died in service, or an Indonesian citizen who made contributions to their nation as a badge of honor.