The 22nd century will be a century of the Anno Domini or Common Era in accordance with the Gregorian calendar. It will be the century following the current 21st century, beginning on January 1, 2101 and ending on December 31, 2200. Nobita's great-great-grandson, Sewashi Nobi, lives in this century. Doraemon came from the 22nd century using a Time Machine to Nobita's childhood period to help him.
- 2112- Production of male robotic cats and the introduction of the secret gadgets
- 2114- Production of female robotic cats and upgrading the function of the secret gadgets
- 2117- War between the robot cats and robot dogs.
- 2120- Production of Lulli, however considers a failure due to high horsepower.
The Birth of Characters
- Before 2109
- Unknown Lineage
- It is revealed in the episode All Alone in the City of the Future that Sewashi is living in the year 2125. This would have made Doraemon older than Nobita and the others.