There are several holidays and observances on September 24, but none of them are particularly special or significant on a global scale. Here are some of the holidays and observances that fall on September 24:

• Heritage Day (Canada)
• Our Lady of Walsingham (Church of England)
• Independence Day (Guinea-Bissau)
• Mahidol Day (Thailand)
• New Caledonia Day (New Caledonia)
• National Cherries Jubilee Day
• Bluebird of Happiness Day
• Lash Stylists Day
• National Horchata Day
• World Bollywood Day

There are also some weekly and monthly holidays that include September 24, but again, none of them are particularly noteworthy.