National Download Day is observed worldwide every December 28 to recognize the impact of smartphones and software applications on daily life and to encourage users to download new apps. The holiday's timing is significant, as it follows the holiday season when many people receive smartphones and tablets as gifts, leading to a spike in app downloads. The origins of National Download Day date back to a 2018 survey by Fort Mason Games, which identified December 28 as the day with the highest number of app downloads in the United States. Typical customs include downloading new apps, decluttering unused ones, updating existing apps, and sharing favorite apps on social media with the hashtag #NationalDownloadDay. Additionally, it is recommended to help others who may not be tech-savvy with app installations or to explore coding an app. National Download Day complements another holiday, National App Day, celebrated on December 11, which honors app developers and their contributions to everyday life.