Seed Swap Day in USA
Seed Swap Day in USA is held on January 27. The first official celebration was held on January 26, 2006, in Washington, D.C. This event in the third decade of the month January is annual. 
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National Seed Swap Day is celebrated on the last Saturday in January, to honor the great U.S. tradition of swapping seeds with neighbors. At seed swaps, gardeners can share seeds they've saved from their own plants, excess seeds from their stash, or even seeds from another region. It's a chance for gardeners to learn more about native plants and those that are well adapted to the local growing area. You can also make connections with other plant lovers.
Make sure you include enough seeds in each packet to ensure a decent harvest. A dozen tomato or pepper seeds is more than enough, but for a crop like corn or beans, it makes more sense to include at least 20.
Similar holidays and events, festivals and interesting facts
Cockroach Racing In Australia on January 26 (The event features 14 different types of races, which also includes a steeple chase race);
Punch the Clock Day on January 27 (This holiday celebrates the system of calculating employee work hours through the Punch Clock system and its invention);
Kazoo Day on January 28 (Alabama Vest of Macon Georgia made the first Kazoo in the 1840's. Actually, he conceived the Kazoo, and had Thaddeus Von Clegg, a German clockmaster make it to his specifications);
Bubble Wrap Appreciation Day on January 29 (Celebrated on the last Monday of January);
Curmudgeons Day on January 29
Puzzle Day on January 29
Car Invention Day or World Automobile Day on January 29