120 months before today was 23 Nov 2014, a Sunday. Subtracting 120 months in the past is usually just counting from November; however, longer calculations will push us from 2024 into 2023 or further. Even if the calculation remains within the year, I usually take note of the 23 days left in the end of November to prep for an additional calculation before October. 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 Sunday November 23, 2014 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 Sunday November 23, 2014 date.
Work months Solution
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
120 months back
Sunday
November 23
Counting back from today is Sunday November 23, 2014 using a full calendar, and is also 89280 hours ago and 89.59% of the year.
Sunday Sunday November 23, 2014 was the 327 day of the year. At that time, it was 89.59% through 2014.