Standardization and Metrology Employees Day is observed in Tajikistan every May 25. This official professional holiday celebrates the contributions of employees in the fields of standardization and metrology, which are essential for ensuring safety, quality, and interoperability at both national and international levels. The origins of this observance date back to 1926, with the establishment of the permanent verification department of the Main Chamber of Weights and Measures in Stalinabad, now known as Dushanbe. The current governing body, Tajikstandard, is responsible for maintaining the State Standards Fund and the National Registry of Measuring Instruments, and it comprises various departments and subordinate organizations dedicated to standardization and metrology. While it is not a non-working holiday unless it falls on a weekend, festive events are typically held on the closest weekday. Tajikistan is not alone in this celebration, as similar observances occur in other former Soviet republics, such as Ukraine and Kyrgyzstan.