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**Tomorrow **(20 October 2019)** minus 150 days** will be

23rd May 2019

For example

- What is 90 years before Today? (Today minus 90 years)
- What is 730 years from 21 April 2022? (21 April 2022 plus 730 years)
- What is 15 years from Yesterday? (Yesterday plus 15 years)
- What is 14 days from 1 March 2022? (1 March 2022 plus 14 days)
- What is 365 weeks before Tomorrow? (Tomorrow minus 365 weeks)
- What is 20 months from 25 November 2020? (25 November 2020 plus 20 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.