220 weeks ago from today was 21 Jun 2020, a Sunday. Anytime we’re subtracting halves of the year, we need to ensure that we’re still in 2024. It looks like 220 weeks from now will bring us back to pre 2023 and we’ll need to factor this into our subtraction because it will change the calendar and fiscal years. For larger calculations like this, I start by subtracting total days, then counting backwards 1540 days on a calendar until getting my solution of Sunday June 21, 2020.
All of our day calculators are measured and QA'd by our engineer. Read more about the Git process here. But here's how 220 weeks ago gets calculated on each visit:
220 weeks is Sunday June 21, 2020 or could be if you only want workdays. This calculation takes 220 weeks and only subtracts by the number of workdays in a week. Remember, removing the weekend from our calculation will drastically change our original Sunday June 21, 2020 date.
Work weeks Solution
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
220 weeks back
Sunday
June 21
Counting back from today is Sunday June 21, 2020 using a full calendar, and is also 36960 hours ago and 47.4% of the year.
Sunday Sunday June 21, 2020 was the 173 day of the year. At that time, it was 47.4% through 2020.