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**12 January 2020**** minus 25 years** will be

12th January 1995

For example

- What is 10 years from Today? (Today plus 10 years)
- What is 90 years before 5 February 2021? (5 February 2021 minus 90 years)
- What is 15 weeks before Yesterday? (Yesterday minus 15 weeks)
- What is 150 days from 1 December 2020? (1 December 2020 plus 150 days)
- What is 365 days before Tomorrow? (Tomorrow minus 365 days)
- What is 180 days from 14 February 2025? (14 February 2025 plus 180 days)

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.