The twin cities of Kalyan and Dombivli were joined and converted into the Kalyan-Dombivli municipal corporation in 1982 to improve the administration of the twin townships. The headquarter of this city is situated in Kalyan. Kalyan and Dombivli are both cities in the Thane District of Konkan division in Maharashtra state. The city comprises a majority of Hindu residents who speak mostly in Marathi. The weather in this city follows the exact trends as that of Mumbai and is known to experience the notorious Mumbai rains. The twin city of Kalyan-Dombivli had been under the reigns of the Mughal, the Portuguese as well as the British. The celebrated Maratha heroes, held in high esteem by the residents, were the only valiant defense against these foreign invasions. The city of Kalyan used to be surrounded by a fort wall which was constructed during the Mughal age and further improved by the Maratha rulers. It was called the Durgadi Fort. History claims that a small wooden temple dedicated to Durgadevi was behind the mosque inside this fort wall. However, this historical relic was dismantled by the British and the stones were used to build the piers of Thane and Kalyan. The idol in the temple was also stolen. Only the remnants of the north-west gate of this fort still remain to remind the people of the historic past.
The HDFC Bank Limited was started in Mumbai. As of 31st March 2018, the bank has more than 88,000 permanent employees in India, and abroad, it has offices in Bahrain, Hong Kong, and Dubai. By assets, the HDFC Bank is Indias largest private sector lender. It is the largest bank in India and ranked 69th in 2016 BrandZ Top 100 Most Valuable Global Brands. In 1994, the HDFC Bank was established with its registered office in Mumbai, India. The then Union Finance Minister, Manmohan Singh inaugurated its first corporate office and a full-service branch at Sandoz House, Worli. The bank had 4,715 branches and 12,260 ATMs across India, as of June 30, 2017. In FY 2017, the bank also installed 4.30 lakhs POS terminals and issued 235.7 lakhs debit cards and 85.4 Lacs credit cards. The HDFC Bank offers many products and services including wholesale banking, treasury, auto loans, two wheeler loans, personal loans, retail banking, loans against property and credit cards. Along with this various digital products are also introduced by HDFC such as Payzapp and Chillr. The HDFC Bank merged with Times Bank in February 2000. In the new-generation private sector banks category, it was the first merger of two private banks. HDFC Bank acquired Centurion Bank in 2008 approved by the HDFC Bank Board for 95.1 billion INR as one of the most significant mergers in the financial sector in India.