To calculate how many more days until June 10, 2025, from today, May 21, 2025:

• May has 31 days.
• From May 21 to May 31 = 10 days.
• Then add the first 10 days of June.

So, 10 (remaining days in May) + 10 (days in June) = 20 days until June 10, 2025.