Quarantine "yellow jack" but this was also a name for yellow fever, which probably derives its common name from the flag, not the color of the victims (cholera ships also used a yellow flag). The plain yellow flag ("Quebec" or Q in international maritime signal flags) probably derives its letter symbol for its initial use in "quarantine", but this flag in modern times indicates the opposite—a ship that declares itself free of quarantinable disease, and requests boarding and routine port inspection. Australia has perhaps the world's strictest quarantine standards. Quarantine in northern Australia is important because of its proximity to South-east
Flag of India the flag must never touch the ground or water, or be used as a drapery in any form. The flag may not be intentionally placed upside down, dipped in anything, or hold any objects other than flower petals before unfurling. No sort of lettering may be inscribed on the flag. When out in the open, the flag should always be flown between sunrise and sunset, irrespective of the weather conditions. Prior to 2009, the flag could be flown on a public building at night under special circumstances; currently, Indian citizens can fly the flag even at night, subject to the