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**6 July 2019**** minus 150 days** will be

6th February 2019

For example

- What is 2 months before Today? (Today minus 2 months)
- What is 30 days before 2 November 2020? (2 November 2020 minus 30 days)
- What is 40 years from Yesterday? (Yesterday plus 40 years)
- What is 15 months before 20 December 2025? (20 December 2025 minus 15 months)
- What is 4 weeks from Tomorrow? (Tomorrow plus 4 weeks)
- What is 7 months before 28 July 2020? (28 July 2020 minus 7 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.