मैं अकेला ही चला था जानिब-ए-मंज़िल मगर लोग साथ आते गए और कारवाँ बनता गया - Purnesh Upadhyay

Tmings of Maitree Express is not well updated on IR. I have traveled in it.
My journey story.
Kolkata to Dhaka. = Arrived Kolkata station at 05.45 am. After immigration & customs, boarded the 13109 Maitree Express. The Train departed at 07.15 hrs from KOAA. A Dhaka resident who was travelling with us, called his home, telling relatives the train has left at 07.45 am as per his BST clock. The train reached Gede at 09.25 IST/09.55 BST, departed at 09.30 IST/10.00 BST. I was constantly watching the Dhaka man's watch...
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which was showing both IST & BST timings. Around 09.45 IST/10.15 BST, the train reached DSN. After a 25 mins halt, the train left DSN at 10.10 IST/10.40 BST. It took 5 hrs 15 mins to reach Dhaka from DSN & interestingly I reached Dhaka at 15.25 IST/15.55 BST. The display board at IRT DAKA was showing that 13109 up Maitree Express arrived 15 mins BT at DAKA. DAKA arr time as per Rly TT at DAKA station is 15.40 hrs IST/16.10 hrs BST.
On My Return, I boarded 13107 Maitree Express from DAKA at 08.45 am BST/08.15 am IST, reaching DSN at 13.45 pm BST/13.15 pm IST. After a breif halt of 25 mins, the train left DSN at 14.10 pm BST/13.40 pm IST leaving behind BR territory & entered IR territory at Gede around 14.30 pm BST/14.00 pm IST. Leaving 5 mins later at 14.35 pm BST/14.05 pm IST, my Maitree Exp journey ended after arrival at 16.20 hrs IST/16.50 hrs BST at Kolkata.
So I figured out
13108/09 Maitree Express TT in IST:- KOAA 07.15; Gede 09.25/30; DSN 09.45/10.10; DAKA 15.40.
13107/10 Maitree Express TT in IST:- DAKA 08.15; DSN 13.15/40; Gede 14.00/05; KOAA 16.20.
Add +30 mins for BST Timings.