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**20 October 2018**** minus 75 days** will be

6th August 2018

For example

- What is 60 weeks before Today? (Today minus 60 weeks)
- What is 60 days from 3 September 2020? (3 September 2020 plus 60 days)
- What is 900 days from Yesterday? (Yesterday plus 900 days)
- What is 3 months before 27 October 2019? (27 October 2019 minus 3 months)
- What is 500 months before Tomorrow? (Tomorrow minus 500 months)
- What is 25 years from 12 August 2019? (12 August 2019 plus 25 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.