School Librarian Day in US
School Librarian Day in US is held on April 4. National Librarian Appreciation Day. This event in the first decade of the month April is annual. 
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Libraries play a critical role in the happiness of Americans. Communities that spend more on libraries, parks and highways are shown to support the well-being of community members. A growing body of evidence suggests that students’ academic success is linked to library usage, including improved student retention and an enhanced academic experience.
There may be no greater repository of analog information than the library, a glorious assembly of printed pages that can take us on adventures, educate us, and fill our days and nights with details of worlds beyond our own—all free of charge.
Paraprofessional Appreciation Day on April 3
Walk to Work Day on April 5
Hospital Admitting Clerks Day in US on April 5
National Maritime Day in India on April 5
Occupational Therapist Day in Chile on April 5
Journalist Day in Dominican Republic on April 5
Medical Intern Day in Colombia on April 6
Psychologist Day in Dominican Republic on April 6