Red represents the rhododendron (Nepal's national flower) and is a sign of victory and bravery
Blue symbolizes peace and harmony
two right triangles originally symbolized the Himalaya Mountains while their charges represented the families of the king (upper) and the prime minister (lower), but today they denote Hinduism and Buddhism (Nepal's two main religions)
the moon and the sun represents permanence and symbolizes the hope that Nepal will last as long as the sun and the moon.
the sun represents the heat and higher temperatures of the lower parts of Nepal
the moon represents the serenity of the Nepalese people and the shade and cool weather in the Himalayas
Name  Nepal Flag (नेपाली झण्डा) 
Adopted  December 16, 1962 
Colors  White, Crimson red, Blue< 
The Nepal flag was adopted after Prithvi Narayan Shah unified all small principalities of Nepal. The present flag was adopted, with the formation of a new constitutional government, on December 16, 1962. The individual pennants had been used for the preceding two centuries and the double pennant since the 19th century. The flag borrows the basic design from the original design, which has been in use for more than 2,000 years
(A) Method of Making the Shape inside the Border (1) On the lower portion of a crimson cloth draw a line AB of the required length from left to right. (2) From A draw a line AC perpendicular to AB making AC equal to AB plus one third AB. From AC mark off D making line AD equal to line AB. Join BD. (3) From BD mark off E making BE equal to AB. (4) Touching E draw a line FG, starting from the point F on line AC, parallel to AB to the right handside. Mark off FG equal to AB. (5) Join CG. (B) Method of Making the Moon (6) From AB mark off H making AH equal to onefourth of line AB and starting from H draw a line HI parallel to line AC touching line CG at point I. (7) Bisect CF at J and draw a line JK parallel to AB touching CG at point K. (8) Let L be the point where lines JK and HI cut one another. (9) Join JG. (10) Let M be the point where line JG and HI cut one another. (11) With centre M and with a distance shortest from M to BD mark off N on the lower portion of line HI. (12) Touching M and starting from O, a point on AC, draw a line from left to right parallel to AB. (13) With centre L and radius LN draw a semicircle on the lower portion and let P and Q be the points where it touches the line OM respectively. (14) With centre M and radius MQ draw a semicircle on the lower portion touching P and Q. (15) With centre N and radius NM draw an arc touching PNQ [sic] at R and S. Join RS. Let T be the point where RS and HI cut one another. (16) With Centre T and radius TS draw a semicircle on the upper portion of PNQ touching it at two points. (17) With centre T and radius TM draw an arc on the upper portion of PNQ touching at two points. (18) Eight equal and similar triangles of the moon are to be made in the space lying inside the semicircle of No. (16) and outside the arc of No. (17) of this Schedule. (C) Method of making the Sun (19) Bisect line AF at U and draw a line UV parallel to line AB touching line BE at V. (20) With centre W, the point where HI and UV cut one another and radius MN draw a circle. (21) With centre W and radius LN draw a circle (22) Twelve equal and similar triangles of the sun are to be made in the space enclosed by the circles of No. (20) and of No. (21) with the two apexes of two triangles touching line HI. (D) Method of Making the Border (23) The width of the border will be equal to the width TN. This will be of deep blue colour and will be provided on all the sides of the flag. However, on the five angles of the flag the external angles will be equal to the internal angles. (24) The above mentioned border will be provided if the flag is to be used with a rope. On the other hand, if it is to be hoisted on a pole, the hole on the border on the side AC can be extended according to requirements. Explanation: The lines HI, RS, FE, ED, JG, OQ, JK and UV are imaginary. Similarly, the external and internal circles of the sun and the other arcs except the crescent moon are also imaginary. These are not shown on the flag.

