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**6 July 2019**** minus 700 days** will be

5th August 2017

For example

- What is 30 days before Today? (Today minus 30 days)
- What is 12 weeks before 30 December 2020? (30 December 2020 minus 12 weeks)
- What is 150 months from Yesterday? (Yesterday plus 150 months)
- What is 40 months before 15 October 2021? (15 October 2021 minus 40 months)
- What is 20 years before Tomorrow? (Tomorrow minus 20 years)
- What is 100 days from 14 October 2023? (14 October 2023 plus 100 days)

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.