How many days until December 18, 2025

Calculating the days until December 18, 2025 is a straightforward process:

1. Identify the target date:
   December 18, 2025
2. Identify the current date:
   June 28, 2025
3. Convert both dates to millisecond timestamps and calculate the difference:
   targetDate = 1,766,016,000,000 milliseconds

   today = 1,751,068,800,000 milliseconds

   difference = 14,947,200,000 milliseconds
4. Convert milliseconds to days:
   14,947,200,000 milliseconds ÷ 86,400,000 milliseconds/day = 173 days