25.1.1971.

From the Union of Punjab Princely States, it became part of the Punjab Province under the British, then it was called the Shimla Hill States and by 1930 it came to be known as Punjab Hill State Agency and remained so until independence. Upon independence, it was administered as a Union Territory and became a State from 25.1.1971.

Shimla, Kullu, Manali.

Sutlej, Ravi, Chenab, Beas, Yamuna.

Shimla, Kulu, Manali, Dharmasala, Dalhousie.

1. BILASPUR: It was a princely state. Govind Sagar lake on Sutlej river and Bakra Nangal dam is here. The road bridge over this lake at Kandraur is the world' s highest road bridge over a lake.
2. CHAMBA: The famous hill station Dalhousie is located here.
3. HAMIRPUR: A hilly place with scenic beauty.
4. KANGRA: Dharmshala is an important place here. It is also the headquarters of Tibetan Government in exile headed by Dalai Lama.
5. KINNAUR: One of the smallest district in India. A mountainous region with forest coverage having cash value plantation trees and wild animals.
6. KULLU: An important tourist spot with scenic valleys, Hindu and Sikh temples.
7. LAHUL & SPITI: Buddhist monastries are famous.
8. MANDI: It was a princely state.
9. SIRMAUR;
10.SOLAN;
11.UNA;
12.SHIMLA : Capital City. The place was developed in the year 1822 when a Summer Home was constructed. By the turn of years, it became the Summer Capital of the British. Summer Festival in May/June every year is very famous. The famous "Shimla Agreement" on the surrender of Pakistan in the 1971 War was signed here. It has a number of high class school level educational Institutions. Bishop Cotton School is one among them wherefrom a number of leading personalities passed out. Notable among them was the infamous Genl. Dyer of Jalianwala Bagh massacre.

1. Bakra Dam: Across sutlej river in Nangal.; 2. Pong Dam: Across Beas river in Talwara. 3. Pandoh Dam: Across Beas river in Mandi. 4. Chamera Dam: Across Ravi river near Chambra. 5. Nathpa Dam: Across Sutlej river near Rampia.

Yashwant Singh Parmar. - 1963 to 1977.