HII

While filling the application form for NDA you need to feel the choices for examination centre so out of the three choices you will be given test centre as per your preference and how early you fill the application form.since you live in Howrah you can fill Kolkata is your first preference.

for your reference I have given the link of the cities where the NDA exams will be organised.

https://www.google.com/amp/s/competition.careers360.com/articles/nda-exam-centres/amp

Hiii

In west bengal the exam center is in kolkata for NDA exam
You can use the following link to know more about the exam centers for NDA
https://competition.careers360.com/articles/nda-exam-centres
Incase of anymore doubt feel free to revert back. I will be more than happy to help you

Thanks!