120 months before today was 06 Jan 2015, a Tuesday. Subtracting 120 months in the past is usually just counting from January; however, longer calculations will push us from 2025 into 2024 or further. Even if the calculation remains within the year, I usually take note of the 6 days left in the early part of January to prep for an additional calculation before . But that’s all there is to it - understand the month, if 120 months will change the year, season, or fiscal calendar, and subtract your dates.
All of our day calculators are measured and QA'd by our engineer. Read more about the Git process here. But here's how 120 months ago gets calculated on each visit:
120 months is Tuesday January 06, 2015 or could be if you only want workdays. This calculation takes 120 months and only subtracts by the number of workdays in a week. Remember, removing the weekend from our calculation will drastically change our original Tuesday January 06, 2015 date.
Work months Solution
Monday
120 months back
Tuesday
January 06
Wednesday
Thursday
Friday
Saturday
Sunday
Counting back from today is Tuesday January 06, 2015 using a full calendar, and is also 89280 hours ago and 1.64% of the year.
Tuesday Tuesday January 06, 2015 was the 006 day of the year. At that time, it was 1.64% through 2015.