**Trains between Calcutta and Delhi**

There are two major trains that connect Calcutta (also known as Kolkata) and Delhi, providing a convenient mode of transportation for travelers. Let's explore these trains in detail:

**1. Rajdhani Express**:
- Rajdhani Express is a superfast train service that operates between major cities in India, including Calcutta and Delhi.
- It is known for its fast and comfortable travel experience, making it a popular choice among passengers.
- The train offers both AC First Class and AC Two Tier Class accommodations, providing a comfortable and luxurious journey.
- Rajdhani Express is equipped with modern amenities such as clean and hygienic toilets, onboard catering services, and spacious seats with ample legroom.
- The train departs from Howrah Junction in Calcutta and arrives at New Delhi Railway Station in Delhi.
- It covers the distance of approximately 1,450 kilometers in around 17-18 hours, depending on the specific train and its schedule.
- Rajdhani Express is considered one of the fastest trains between Calcutta and Delhi, ensuring a time-efficient journey for passengers.

**2. Duronto Express**:
- Duronto Express is another popular train service that connects Calcutta and Delhi.
- It is a non-stop train that operates at high speeds, providing a quick travel option for passengers.
- Duronto Express offers AC First Class, AC Two Tier Class, AC Three Tier Class, and Sleeper Class accommodations, catering to different budget preferences of travelers.
- The train is equipped with modern amenities such as charging points, clean toilets, and onboard catering services.
- It departs from Sealdah Railway Station in Calcutta and arrives at New Delhi Railway Station in Delhi.
- The distance between Calcutta and Delhi is covered in approximately 16-17 hours, depending on the specific train and its schedule.
- Duronto Express is known for its punctuality and efficiency, ensuring a smooth and hassle-free journey for passengers.

In conclusion, the Rajdhani Express and Duronto Express are two major train services that connect Calcutta and Delhi. These trains offer comfortable accommodations, modern amenities, and efficient travel options for passengers. Whether you prefer a superfast journey or a non-stop train experience, both options provide a convenient mode of transportation between these two cities.