315 weeks ago from today was 10 Nov 2018, a Saturday. Anytime we’re subtracting halves of the year, we need to ensure that we’re still in 2024. It looks like 315 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 2205 days on a calendar until getting my solution of Saturday November 10, 2018.
All of our day calculators are measured and QA'd by our engineer. Read more about the Git process here. But here's how 315 weeks ago gets calculated on each visit:
315 weeks is Saturday November 10, 2018 or could be if you only want workdays. This calculation takes 315 weeks and only subtracts by the number of workdays in a week. Remember, removing the weekend from our calculation will drastically change our original Saturday November 10, 2018 date.
Work weeks Solution
Monday
Tuesday
Wednesday
Thursday
Friday
315 weeks back
Saturday
November 10
Sunday
Counting back from today is Saturday November 10, 2018 using a full calendar, and is also 52920 hours ago and 86.03% of the year.
Saturday Saturday November 10, 2018 was the 314 day of the year. At that time, it was 86.03% through 2018.