WASHINGTON, Dec. 6 (TNSLrpt) -- The Congressional Research Service issued the following fact sheet (No. R48749) on Dec. 5, 2025, by reference and instruction librarian Megan Hunt. Here are excerpts: * * * Arbor Day Fact Sheet SUMMARY Arbor Day is a civic holiday observed in all 50 states. In the United States, it is celebrated as National Arbor Day on the last Friday in April, although some states observe it on other dates, depending on the local planting climate. This fact sheet is design  more