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

2nd August 2018

For example

- What is 2 months from Today? (Today plus 2 months)
- What is 21 years before 25 December 2021? (25 December 2021 minus 21 years)
- What is 20 years from Yesterday? (Yesterday plus 20 years)
- What is 9 weeks before 20 October 2019? (20 October 2019 minus 9 weeks)
- What is 13 months before Tomorrow? (Tomorrow minus 13 months)
- What is 11 weeks from 14 February 2023? (14 February 2023 plus 11 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.