Howrah Rajdhani - At 50, the Handsome King 👑 is still ruling the tracks superbly. - Somanko

First don't expect your arrival at right time (trains may late).
Let me know do u have heavy luggage with yuou?.
If u don't have luggage and want to reach quickely,
1. Take local bus from nizamuddin to indraprast metro(local train) station.
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But tere is no single metro local train direct to newdelhi, you have to change
onemore metro train.
2. Purchase ticket (token) up to newdelhi (ticket is single but you can change
number of trains).
> People calls this route as blue line
> Please follow the metro rules, fine on splitting, eating, ... in metro environments.
3. Get down at rajiv chowk in order to change jahangiripuri side metro train, which goes through newdelhi metro station
> People calls this route as yellow line.
> Note: immediately (next station is newdelhi) new delhi station comes , means
no other stations in between rajivchowk and newdelhi.
> Stay near the door after entering in to metro at rajiv chowk, because newdelhi
station comes just with in 2 to three minutes.
Every thing indicated by good display boards in all metro railway stations to guide the passengers.. So you will get the satisfactable self guidance.
And your journey time nizamuddin to indraprast ~10-15 min, From indraprast to newdelhi ~10min.
If you have heavy and rash luggage better to opt taxi direct from nizamuddinn to newdelhi.. at morning it takes @ 30 to 60 min. It may increase as per traffic after 07:00 hours.