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

1st August 2018

For example

- What is 500 days before Today? (Today minus 500 days)
- What is 150 days before 25 March 2021? (25 March 2021 minus 150 days)
- What is 2 days from Yesterday? (Yesterday plus 2 days)
- What is 3 months from 24 April 2023? (24 April 2023 plus 3 months)
- What is 12 weeks from Tomorrow? (Tomorrow plus 12 weeks)
- What is 5 years before 13 June 2020? (13 June 2020 minus 5 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.