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**Yesterday **(18 July 2019)** minus 9 days** will be

9th July 2019

For example

- What is 730 weeks from Today? (Today plus 730 weeks)
- What is 20 days before 25 November 2022? (25 November 2022 minus 20 days)
- What is 1 year before Yesterday? (Yesterday minus 1 year)
- What is 30 weeks before 1 February 2022? (1 February 2022 minus 30 weeks)
- What is 700 months before Tomorrow? (Tomorrow minus 700 months)
- What is 12 years from 30 March 2020? (30 March 2020 plus 12 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.