The departure and arrival timing of the Vaigai Superfast Express (No. $12635$) from Chennai Egmore to Madurai Junction are given. Read the details and answer the following.

Station	Arrival	Departure
Chennai Egmore	$-$	$13:40$
Tambaram	$14:08$	$14:10$
Chengalpattu	$14:38$	$14:40$
Villupuram	$15:50$	$15:55$
Virudhachalam	$16:28$	$16:30$
Ariyalur	$17:04$	$17:05$
Trichy	$18:30$	$18:35$
Dindigul	$20:03$	$20:05$
Sholavandan	$20:34$	$20:35$
Madurai	$21:20$	$-$

 How many halts are there between Chennai and Madurai?

The departure and arrival timing of the Vaigai Superfast Express (No. $12635$) from Chennai Egmore to Madurai Junction are given. Read the details and answer the following.

 How long does the train halt at the Villupuram junction?

The departure and arrival timing of the Vaigai Superfast Express (No. $12635$) from Chennai Egmore to Madurai Junction are given. Read the details and answer the following.

 At what time does the train come to Sholavandan?

The departure and arrival timing of the Vaigai Superfast Express (No. $12635$) from Chennai Egmore to Madurai Junction are given. Read the details and answer the following.

 Find the journey time from Chennai Egmore to Madurai?

Write the final answer in the box in terms of hours and  minutes.(For example: $3 \mathrm{hours} 20 \mathrm{minutes}$)