National Sons and Daughters Day lands on Aug. 11 every year, a fixed date families have used for decades as a nudge to slow down and actually spend real time with their children, rather than let it get lost in the usual routine. Throughout the day, they were meant to reflect on their kids, including any who had already grown up and moved away. Part of what's kept National Sons and Daughters Day going, even without official status, is how simple it is to observe. The holiday also fits into a broader pattern of family-bonding observances that have grown in number over the years, alongside days like National Siblings Day and Take Our Daughters and Sons to Work Day. At its core, National Sons and Daughters Day exists as a reminder that time with kids doesn't stay constant.