The Flag Code of India says that the Flag can be of any size but its ratio of length to height must be 3:2 in the rectangular shape.
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Right way to hoist national flag
The person hoisting the national flag to make sure that the flag is not hoisted in an inverted manner–that is the saffron part of the flag should fly high.
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No damage should be there
The flag you are hoisting must not display a damaged tricolour and neither it should touch the ground or water. The national flag should not be damaged in whatsoever way
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How to dispose off damaged flag?
The Flag Code of India suggests that it should be completely destroyed in private by burning it; and if it is paper-made, make sure that its is not abandoned on the ground.
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English
No restriction on timings
A citizen, a private organization or an educational institution may hoist or display the National Flag on all days and occasions. Tiranga can now be displayed at whatever time.