The sales tax rules were made effective on 1 July 2006, so that is the date they came into force.

Nawaz Sharif and Benazir Bhutto signed the Charter of Democracy on May 14, 2006 as a joint commitment to democratic norms.

Shinzo Abe first assumed the office of Prime Minister of Japan in 2006.

The BRIC grouping, which originally included Brazil, Russia, India, and China, held its first formal meeting of foreign ministers in 2006 on the sidelines of the UN General Assembly. This event is widely recognized as the formal establishment of the bloc, which later expanded to include South Africa.

BRICS is an acronym for the powerful grouping of the world's leading emerging market economies: Brazil, Russia, India, China, and South Africa. The group was originally formed as BRIC in 2006, with South Africa joining later in 2010. These nations are characterized by their significant influence on regional and global economic affairs.

To determine the day, we calculate the number of odd days. From February 18, 2005, to February 18, 2006, is one year (365 days), which contains one odd day. From February 18, 2006, to February 18, 2007, is another year, also containing one odd day. Total odd days equal two. Adding two days to Friday results in Sunday.

The State Bank of Pakistan introduced the 5,000 rupee denomination banknote into circulation on June 25, 2006. This was part of the bank's initiative to improve the efficiency of high-value transactions within the country's financial system. The note features advanced security measures to prevent counterfeiting and remains a legal tender in Pakistan today.

Koïchiro Matsuura, a Japanese diplomat, served as the Director-General of UNESCO from 1999 to 2009. During his tenure, he focused on promoting cultural diversity and education, overseeing the organization's efforts to protect world heritage sites and advance international cooperation in science and communication throughout the early 21st century.

Anousheh Ansari, an Iranian-American engineer and entrepreneur, made history on September 18, 2006, by becoming the first self-funded woman to fly to the International Space Station. Her mission aboard the Russian Soyuz TMA-9 spacecraft solidified her status as the first Muslim woman to travel into space, serving as an inspiration for women in science and technology globally.

Montenegro gained its independence in 2006 following a referendum that dissolved the state union of Serbia and Montenegro. Comparing the options provided, East Timor became independent in 2002, Slovakia in 1993, and Serbia continued as the successor state to the union. Therefore, Montenegro's formal declaration of independence in 2006 is the most recent event among these choices.