# World Metrology Day

> world day to celebrate the International System of Units on the anniversary of the signing of the Metre Convention

**Wikidata**: [Q575238](https://www.wikidata.org/wiki/Q575238)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/World_Metrology_Day)  
**Source**: https://4ort.xyz/entity/world-metrology-day


## References

1. [Source](https://www.unesco.org/en/days/metrology)
2. [Source](https://www.worldmetrologyday.org/past_posters.html)
3. Freebase Data Dumps. 2013
4. [Source](https://www.worldmetrologyday.org/)