- Jan. 1: New Year's Day, National Hangover Day
- Jan. 2: National Science Fiction Day, National Thank God It's Monday Day
- Jan. 3: J.R.R. Tolkien Day, Festival of Sleep Day, International Mind-Body Wellness Day
- Jan. 4: Trivia Day, National Spaghetti Day
- Jan. 5: National Bird Day
- Jan. 6: National Take Down the Christmas Tree Day, Cuddle Up Day, Bean Day
- Jan. 7: Old Rock Day
- Jan. 8: Bubble Bath Day
- Jan. 9: Coming of Age Day, National Word Nerd Day
- Jan. 10: Houseplant Appreciation Day, National Bittersweet Chocolate Day
- Jan. 11: Learn Your Name in Morse Code Day
- Jan. 12: Stick to Your New Year's Resolution Day, National Hot Tea Day
- Jan. 13: Make Your Dream Come True Day, National Rubber Ducky Day
- Jan. 14: Dress Up Your Pet Day, Organize Your Home Day
- Jan. 15: National Hat Day, National Bagel Day
- Jan. 16: Martin Luther King Jr. Day, National Nothing Day
- Jan. 17: Benjamin Franklin Day, Ditch New Year's Resolutions Day
- Jan. 18: Thesaurus Day, Winnie the Pooh Day, National Gourmet Coffee Day
- Jan. 19: National Popcorn Day, National Good Memory Day
- Jan. 20: National Cheese Lovers Day, Take A Walk Outdoors Day
- Jan. 21: National Hugging Day, Own Your Own Home Day
- Jan. 22: National Blonde Brownie Day, Lunar New Year
- Jan. 23: National Handwriting Day, National Pie Day
- Jan. 24: Compliment Day, Belly Laugh Day
- Jan. 25: Opposite Day
- Jan. 26: Spouse's Day
- Jan. 27: National Chocolate Cake Day, Punch the Clock Day
- Jan. 28: Visit Your Local Quilt Shop Day, Data Privacy Day
- Jan. 29: National Puzzle Day, National Carnation Day
- Jan. 30: National Bubble Wrap Appreciation Day
- Jan. 31: Backward Day, Inspire Your Heart With Art Day
*Must be new cards.
*CANNOT be combined with other challenges.