489 weeks ago from today was 12 Jul 2015, a Sunday. Anytime we’re subtracting halves of the year, we need to ensure that we’re still in 2024. It looks like 489 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 3423 days on a calendar until getting my solution of Sunday July 12, 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 489 weeks ago gets calculated on each visit:
489 weeks is Sunday July 12, 2015 or could be if you only want workdays. This calculation takes 489 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 July 12, 2015 date.
Work weeks Solution
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
489 weeks back
Sunday
July 12
Counting back from today is Sunday July 12, 2015 using a full calendar, and is also 82152 hours ago and 52.88% of the year.
Sunday Sunday July 12, 2015 was the 193 day of the year. At that time, it was 52.88% through 2015.