480 weeks ago from today was 28 Jun 2015, a Sunday. Anytime we’re subtracting halves of the year, we need to ensure that we’re still in 2024. It looks like 480 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 3360 days on a calendar until getting my solution of Sunday June 28, 2015.
All of our day calculators are measured and QA'd by our engineer. Read more about the Git process here. But here's how 480 weeks ago gets calculated on each visit:
480 weeks is Sunday June 28, 2015 or could be if you only want workdays. This calculation takes 480 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 28, 2015 date.
Work weeks Solution
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
480 weeks back
Sunday
June 28
Counting back from today is Sunday June 28, 2015 using a full calendar, and is also 80640 hours ago and 49.04% of the year.
Sunday Sunday June 28, 2015 was the 179 day of the year. At that time, it was 49.04% through 2015.