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**6 July 2019**** minus 12 weeks** will be

13th April 2019

For example

- What is 90 days before Today? (Today minus 90 days)
- What is 11 days before 20 May 2020? (20 May 2020 minus 11 days)
- What is 2 years before Yesterday? (Yesterday minus 2 years)
- What is 8 days before 29 March 2025? (29 March 2025 minus 8 days)
- What is 20 years before Tomorrow? (Tomorrow minus 20 years)
- What is 300 weeks from 6 October 2024? (6 October 2024 plus 300 weeks)

The **Gregorian calendar** is the most widely used internationally civil calendar. It is named after Pope Gregory 13th, who introduced it in **October 1582**.

The Gregorian calendar is a **solar calendar**. A regular Gregorian year consists of 365 days, but as in the Julian calendar, in certain years, a leap year, a **leap day is added to February**

The months of **April, June, September, and November** have **30 days**, while the **rest have 31 days** except for **February**, which has **28 days** in a standard year, and **29 in a leap year**.

For best results, please use dates after 1752 and **verify any data** if you are doing genealogy research.