September 15, 2025

Holidays on this day:

• Independence Day in Costa Rica
  September 15
• Return of Primorska to the Motherland in Slovenia
  September 15
• Independence Day in El Salvador
  September 15

September 15 2025 is the 258^th day of the year 2025 in the Gregorian calendar.
The day of the week is Monday. There are 107 days remaining until the end of this year.
Chinese New Year 2025 will be from January 29 to February 12,
Muslim New Year - June 26,
Jewish New Year, or Rosh Hashanah - from September 23 to September 24.