Flag of Thailand and blue for the monarchy, the last having been the auspicious colour of Rama VI. As the king declared war on Germany that July, some note the flag now bore the same colours as those of the UK, France, Russia and the United States. The Flag Act of BE 2522 (1979) stipulates the design of the national flag as "rectangular in shape with 6 part width and 9 part length, divided into five stripes throughout the length of the flag; with the middle stripe being 2 part wide, of deep blue colour, and the white stripes being 1 part wide
Flag of Thailand regimental colours of the RTN is as same as this flag; both ensigns were adopted in 1917. Flag of Thailand The flag of the Kingdom of Thailand (; , meaning 'tricolour flag') shows five horizontal stripes in the colours red, white, blue, white and red, with the central blue stripe being twice as wide as each of the other four. The design was adopted on 28 September 1917, according to the royal decree issued by Rama VI that year. Since 2016, that day is a national day of importance in Thailand celebrating the nation's flag. The colours are said to