Diwali is the biggest and brightest festival celebrated by the over 1 billion Indian community worldwide and the 783,000+ Indian diaspora in Australia. Also known Diwali is the biggest and brightest festival celebrated by the over 1 billion Indian community worldwide and the 783,000+ Indian diaspora in Australia. Also known ... Diwali is the biggest and brightest festival celebrated by the over 1 billion Indian community worldwide and the 783,000+ Indian diaspora in Australia. Also known ... Diwali is the biggest and brightest festival celebrated by the over 1 billion Indian community worldwide and the 783,000+ Indian diaspora in Australia. Also known ... Diwali is the biggest and brightest festival celebrated by the over 1 billion Indian community worldwide and the 783,000+ Indian diaspora in Australia. Also known ...