Chronology of ECO Metrication:

Economic Cooperation Organization (ECO)

127 TUR Turkey

TUR Time Zone +2 Türkiye (Turkey) Ankara
Metric System Adoption: 1869 and 1931; see MetricPioneer.com/Turkey for more detail
Compulsory Metric Implementation: 1933
United Nations Member: 24 Oct 1945

98 KAZ Kazakhstan

KAZ Time Zone +5, +6 Kazakhstan Astana
Metric System Adoption: 1922
Compulsory Metric Implementation: 1927
United Nations Member: 2 Mar 1992

99 KGZ Kyrgyzstan

KGZ Time Zone +6 Kyrgyzstan Bishkek
Metric System Adoption: 1922
Compulsory Metric Implementation: 1927
United Nations Member: 2 Mar 1992

100 TJK Tajikistan

TJK Time Zone +5 Tajikistan Dushanbe
Metric System Adoption: 1922
Compulsory Metric Implementation: 1927
United Nations Member: 2 Mar 1992

101 UZB Uzbekistan

UZB Time Zone +5 Uzbekistan Tashkent
Metric System Adoption: 1922
Compulsory Metric Implementation: 1927
United Nations Member: 2 Mar 1992

102 TKM Turkmenistan

TKM Time Zone +5 Turkmenistan Ashgabat
Metric System Adoption: 1922
Compulsory Metric Implementation: 1927
United Nations Member: 2 Mar 1992

110 AZE Azerbaijan

AZE Time Zone +4 Azərbaycan (Azerbaijan) Bakı (Baku)
Metric System Adoption: 1922
Compulsory Metric Implementation: 1927
United Nations Member: 2 Mar 1992

103 AFG Afghanistan

AFG Time Zone +4.5 Afghanistan Kabul
Metric System Adoption: 1926
United Nations Member: 19 Nov 1946

105 IRN Iran

IRN Time Zone +3.5 Iran Tehran
Metric System Adoption: 1933
Compulsory Metric Implementation: 1935-49
United Nations Member: 24 Oct 1945

104 PAK Pakistan

PAK Time Zone +5 Pakistan Islamabad
International System Adoption: 1967-72
United Nations Member: 30 Sep 1947

Click on the image of Earth here to see when metrication occurred in each country or territory on Earth: