15 months from today is 27 Oct 2025, a Monday. Adding 15 months in the future is usually just counting from July; however, longer calculations will push us from 2024 into 2025. Even if the calculation remains within the year, I usually take note of the 4 days left in the end of July, to prep for left over days or weeks in the calculation.
All of our day calculators are measured and QA'd by our engineer. Read more about the Git process here. But here's how adding 15 months to today's date gets calculated on each visit:
Monday Monday October 27, 2025 is the 300 day of the year or 82.19% through 2025.
15 months is Monday October 27, 2025 or could be Saturday May 09, 2026 if you only want workdays. This calculation takes 15 months and only adds by the number of workdays in a week. Remember, removing the weekend from our calculation will drastically change our original Monday October 27, 2025 date.
Work months Solution
15 months ahead
Monday
October 27
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday