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**19 October 2018**** minus 80 days** will be

31st July 2018

For example

- What is 1 day before Today? (Today minus 1 day)
- What is 200 years from 14 February 2022? (14 February 2022 plus 200 years)
- What is 2 days from Yesterday? (Yesterday plus 2 days)
- What is 400 years before 2 December 2019? (2 December 2019 minus 400 years)
- What is 500 years from Tomorrow? (Tomorrow plus 500 years)
- What is 730 months before 24 October 2021? (24 October 2021 minus 730 months)

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.