The 10 federal holidays listed on the Office of Personnel Management website provide traditional themes for eight months of the year. There are themes, however, for every month of the year.
Some monthly themes are established by Presidential Proclamation, others promoted by federal agencies, and some created by private organizations. January includes National Healthy Weight Awareness established by U.S. Public Health Service as well as Stalking Awareness and Slavery and Human Trafficking Prevention, both of which were established by proclamation.
February is traditionally Black History month, but it is also American Heart month established by President Johnson in 1963. The USDA named March National Nutrition Month, and the Department of Health and Human Services names April as National Child Abuse Prevention Month.
May is recognized as awareness months for ALS, asthma, mental health, lupus, and stroke, each established by their respective national organizations. Presidents Clinton and Obama both declared June to be gay pride months: Gay and Lesbian Pride Month and Lesbian, Gay, Bisexual, and Transgender Pride Month respectively.
By 2014 Presidential proclamation, September was named National Childhood Cancer Awareness Month. The government's Substance Abuse and Mental Health Services Administration also recognizes September as National Recovery Month.
Although not a federal holiday, Halloween is the traditional celebratory theme for October. It is also Fire Prevention Month and is designated as the month to recognize several different heritages: Italian American, Hispanic, and Polish. In addition to Thanksgiving, November also recognizes Native American heritage. December is traditionally set aside to honor Christmas, Hanukkah and Kwanzaa.