on 1 July 2001. A shortwave listener coalition formed to oppose the change. The BBC broadcasts to Central America and South America in several languages. It is possible to receive the Western African shortwave radio broadcasts from eastern North America, but the BBC does not guarantee reception in this area. It has ended its specialist programming to the Falkland Islands but continues to provide a stream of World Service programming to the Falkland Islands Radio Service. Asia For several decades, the World Service's largest audiences have been in Asia, the Middle East, Near East and South Asia. Transmission facilities in the UK and Cyprus were supplemented by the former BBC Eastern Relay Station in Oman and the Far Eastern Relay Station in Singapore, formerly in Malaysia. The East Asian Relay Station moved to Thailand in 1997 when Hong Kong was handed over to Chinese sovereignty. The relay station in Thailand was closed in January 2017; currently, relay stations in Singapore and Oman serve the Asian region. Together, these facilities have given the BBC World Service an easily accessible signal in regions where shortwave listening has traditionally been popular. The English shortwave frequencies of 6.195 (49m band), 9.74 (31m band), 15.31/15.36 (19m band) and 17.76/17.79 (16m band) were widely known. On 25 March 2018, the long-established shortwave frequency of 9.74 MHz was changed to 9.9 MHz. The largest audiences are in English, Hindi, Urdu, Nepali, Bengali, Sinhala, Tamil, Marathi and other major languages of South Asia, where BBC broadcasters are household names. The Persian service is the de facto national broadcaster of Afghanistan, along with its Iranian audience. The World Service is available up to eighteen hours a day in English across most parts of Asia, and in Arabic for the Middle East. With the addition of relays in Afghanistan and Iraq these services are accessible in most of the Middle and Near East in the evening. In Singapore, the BBC World Service in English is essentially treated as a domestic broadcaster, easily available 24/7 through long-term agreement with MediaCorp Radio. For many years Radio Television Hong Kong broadcast BBC World Service 24/7 but as of 12 February 2021, Hong Kong has banned the BBC's World Service radio from its airwaves, following swiftly on the heels of China's decision to bar its World News television channels, seemingly in retaliation for Ofcom revoking the UK broadcasting licence of China Global Television Network.