66 months before today was 19 Nov 2018, a Monday. Subtracting 66 months in the past is usually just counting from May; 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 19 days left in the middle of May to prep for an additional calculation before April. But that’s all there is to it - understand the month, if 66 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 66 months ago gets calculated on each visit:
66 months is Monday November 19, 2018 or could be if you only want workdays. This calculation takes 66 months and only subtracts by the number of workdays in a week. Remember, removing the weekend from our calculation will drastically change our original Monday November 19, 2018 date.
Work months Solution
66 months back
Monday
November 19
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Counting back from today is Monday November 19, 2018 using a full calendar, and is also 49104 hours ago and 88.49% of the year.
Monday Monday November 19, 2018 was the 323 day of the year. At that time, it was 88.49% through 2018.