You will find information about countries day by day. When every country celebrates, information collected for all collectors.
No National Day is celebrated today.
Harbin International Ice and Snow Sculpture Festival (Harbin, China)
Joma Shinji (Japan)
National Bird Day (United States)
Sources:
https://www.timeanddate.com/holidays/?allcountries
https://sites.google.com/site/worldfactsinc/public-and-national-holidays-around-the-world
https://en.wikipedia.org/wiki/January_5
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