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

6th July 2018

For example

- What is 7 days before Today? (Today minus 7 days)
- What is 50 weeks before 22 September 2023? (22 September 2023 minus 50 weeks)
- What is 6 months before Yesterday? (Yesterday minus 6 months)
- What is 21 years before 18 March 2020? (18 March 2020 minus 21 years)
- What is 11 weeks before Tomorrow? (Tomorrow minus 11 weeks)
- What is 100 years before 24 August 2023? (24 August 2023 minus 100 years)

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.