Guwahati To Angar Samastipur Trains

Popular Trains from Guwahati to Angar Samastipur

31 found from KYQ, RNY, GHY to BGS, SPJ, BJU, KGG, MOG, BARH, MKA

Train name and number	Starting station	Duration	Ending station
15909 - AVADH ASSAM EXP Runs onMTWTFSS	10:00 PM GHY Guwahati	17h 25m 596 KM 86 stops	03:25 PM SPJ Samastipur 14 KM from ARG	Starting from ₹430
15632 - GHY BME EXPRESS Runs onMTWTFSS	10:45 AM GHY Guwahati	15h 47m 590 KM 33 stops	02:32 AM MKA Mokameh 44 KM from ARG	Starting from ₹250
19616 - KAVI GURU EXP Runs onMTWTFSS	06:30 PM KYQ Guwahati 6 KM from GHY	17h 10m 591 KM 45 stops	11:40 AM SPJ Samastipur 14 KM from ARG	Starting from ₹450
15903 - DBRG CDG EXP Runs onMTWTFSS	07:50 PM GHY Guwahati	15h 50m 596 KM 36 stops	11:40 AM SPJ Samastipur 14 KM from ARG	Starting from ₹425
13247 - CAPITAL EXPRESS Runs onMTWTFSS	06:15 AM KYQ Guwahati 6 KM from GHY	20h 14m 605 KM 41 stops	02:29 AM BARH Barh 43 KM from ARG	Starting from ₹455
15658 - BRAHMAPUTRA EXP Runs onMTWTFSS	04:55 PM KYQ Guwahati 6 KM from GHY	18h 14m 584 KM 44 stops	11:09 AM MKA Mokameh 44 KM from ARG	Starting from ₹465
12423 - RAJDHANI EXP Runs onMTWTFSS	06:45 AM GHY Guwahati	12h 20m 582 KM 23 stops	07:05 PM BJU Barauni 37 KM from ARG	Starting from ₹2210
12505 - NORTHEAST EXP Runs onMTWTFSS	12:40 PM KYQ Guwahati 6 KM from GHY	14h 576 KM 30 stops	02:40 AM BJU Barauni 37 KM from ARG	Starting from ₹2720
15653 - AMARNATH EXP Runs onMTWTFSS	02:00 PM GHY Guwahati	15h 30m 596 KM 44 stops	05:30 AM SPJ Samastipur 14 KM from ARG	Starting from ₹425
20503 - RAJDHANI EXP Runs onMTWTFSS	05:35 AM GHY Guwahati	13h 596 KM 24 stops	06:35 PM SPJ Samastipur 14 KM from ARG	Starting from ₹1745
15624 - KYQ BGKT EXP Runs onMTWTFSS	05:30 PM KYQ Guwahati 6 KM from GHY	15h 2m 562 KM 43 stops	08:32 AM BGS Begusarai 46 KM from ARG	Starting from ₹400
12520 - AGTL LTT AC EXP Runs onMTWTFSS	08:40 PM GHY Guwahati	13h 35m 582 KM 38 stops	10:15 AM BJU Barauni 37 KM from ARG	Starting from ₹1165
15077 - KYQ GTNR EXPRESS Runs onMTWTFSS	09:27 PM KYQ Guwahati 6 KM from GHY	13h 8m 576 KM 14 stops	10:35 AM BJU Barauni 37 KM from ARG	Starting from ₹425
22449 - PORVOTR S KRNTI Runs onMTWTFSS	06:10 AM GHY Guwahati	13h 55m 582 KM 12 stops	08:05 PM BJU Barauni 37 KM from ARG	Starting from ₹470
14037 - PORVOTR S KRNTI Runs onMTWTFSS	06:05 AM GHY Guwahati	14h 582 KM 15 stops	08:05 PM BJU Barauni 37 KM from ARG	Starting from ₹440
14619 - TRIPURA SUNDARI Runs onMTWTFSS	06:05 AM GHY Guwahati	14h 582 KM 31 stops	08:05 PM BJU Barauni 37 KM from ARG	Starting from ₹425
15655 - KYQ SVDK EXP Runs onMTWTFSS	11:00 AM KYQ Guwahati 6 KM from GHY	15h 40m 591 KM 40 stops	02:40 AM SPJ Samastipur 14 KM from ARG	Starting from ₹1185
15651 - LOHIT EXPRESS Runs onMTWTFSS	02:00 PM GHY Guwahati	15h 20m 608 KM 42 stops	05:20 AM MOG Mohiuddinnagar 29 KM from ARG	Starting from ₹420
15668 - KYQ GIMB EXP Runs onMTWTFSS	11:00 AM KYQ Guwahati 6 KM from GHY	13h 31m 562 KM 35 stops	12:31 AM BGS Begusarai 46 KM from ARG	Starting from ₹425
20505 - RAJDHANI EXP Runs onMTWTFSS	06:15 AM RNY Rangiya 32 KM from GHY	12h 35m 572 KM 25 stops	06:50 PM BJU Barauni 37 KM from ARG	Starting from ₹1780
15621 - KYQ ANVT EXP Runs onMTWTFSS	05:00 AM KYQ Guwahati 6 KM from GHY	15h 5m 576 KM 26 stops	08:05 PM BJU Barauni 37 KM from ARG	Starting from ₹435
19306 - KYQ DADN EXP Runs onMTWTFSS	05:00 AM KYQ Guwahati 6 KM from GHY	15h 5m 576 KM 37 stops	08:05 PM BJU Barauni 37 KM from ARG	Starting from ₹1170
22411 - ARUNACHAL EXP Runs onMTWTFSS	03:15 AM RNY Rangiya 32 KM from GHY	13h 5m 572 KM 18 stops	04:20 PM BJU Barauni 37 KM from ARG	Starting from ₹1110
15634 - GHY BKN EXPRESS Runs onMTWTFSS	10:45 AM GHY Guwahati	15h 47m 590 KM 32 stops	02:32 AM MKA Mokameh 44 KM from ARG	Starting from ₹420
15636 - GHY OKHA EXP Runs onMTWTFSS	10:45 AM GHY Guwahati	15h 47m 590 KM 43 stops	02:32 AM MKA Mokameh 44 KM from ARG	Starting from ₹1135
15933 - NTSK ASR EXPRESS Runs onMTWTFSS	07:45 PM GHY Guwahati	16h 55m 582 KM 38 stops	12:40 PM BJU Barauni 37 KM from ARG	Starting from ₹415
15626 - AGTL DGHR EXP Runs onMTWTFSS	08:55 AM GHY Guwahati	14h 48m 533 KM 21 stops	11:43 PM KGG Khagaria 64 KM from ARG	Starting from ₹390
13281 - DBRG RJPB EXP Runs onMTWTFSS	05:25 PM GHY Guwahati	17h 12m 590 KM 33 stops	10:37 AM MKA Mokameh 44 KM from ARG	Starting from ₹440
15926 - DBRG DGHR EXP Runs onMTWTFSS	10:05 AM RNY Rangiya 32 KM from GHY	13h 38m 524 KM 30 stops	11:43 PM KGG Khagaria 64 KM from ARG
15946 - DBRG LTT EXP Runs onMTWTFSS	04:50 PM GHY Guwahati	18h 11m 611 KM 55 stops	11:01 AM BARH Barh 43 KM from ARG	Starting from ₹430
15648 - GHY LTT EXPRESS Runs onMTWTFSS	03:00 PM GHY Guwahati	21h 6m 611 KM 52 stops	12:06 PM BARH Barh 43 KM from ARG	Starting from ₹475

Covid Special Trains from Guwahati to Angar Samastipur

34 found from KYQ, RNY, GHY to SPJ, BGS, BJU, SPP, MOG, ROA, MKA

Train name and number	Starting station	Duration	Ending station
01666 - AGTL RKMP SPL Runs onMTWTFSS	07:20 AM GHY Guwahati	12h 45m 582 KM 39 stops	08:05 PM BJU Barauni 37 KM from ARG	Starting from ₹260
05081 - KYQ GKP SPECIAL Runs onMTWTFSS	09:00 PM KYQ Guwahati 6 KM from GHY	13h 15m 576 KM 18 stops	10:15 AM BJU Barauni 37 KM from ARG
05650 - GHY PUNE SPECIAL Runs onMTWTFSS	08:40 PM GHY Guwahati	13h 35m 582 KM 28 stops	10:15 AM BJU Barauni 37 KM from ARG
04724 - GHY BKN SPL Runs onMTWTFSS	08:30 PM GHY Guwahati	13h 45m 582 KM 34 stops	10:15 AM BJU Barauni 37 KM from ARG
05831 - RPAN PRYJ SPL Runs onMTWTFSS	11:20 AM RNY Rangiya 32 KM from GHY	13h 55m 572 KM 28 stops	01:15 AM BJU Barauni 37 KM from ARG
05936 - DBRG BRC SPECIAL Runs onMTWTFSS	11:10 AM RNY Rangiya 32 KM from GHY	14h 572 KM 40 stops	01:10 AM BJU Barauni 37 KM from ARG	Starting from ₹505
04619 - AGTL FZR SPECIAL Runs onMTWTFSS	05:05 AM GHY Guwahati	14h 582 KM 31 stops	07:05 PM BJU Barauni 37 KM from ARG
05610 - GHY HDP SPECIAL Runs onMTWTFSS	08:40 PM GHY Guwahati	14h 5m 582 KM 29 stops	10:45 AM BJU Barauni 37 KM from ARG
05656 - GHY JAT SPECIAL Runs onMTWTFSS	08:30 PM GHY Guwahati	14h 6m 619 KM 38 stops	10:36 AM SPP Shahpur Patoree 37 KM from ARG
05980 - NTSK GKP SPL Runs onMTWTFSS	02:25 PM GHY Guwahati	14h 10m 582 KM 30 stops	04:35 AM BJU Barauni 37 KM from ARG	Starting from ₹260
05618 - SCL CNB SPECIAL Runs onMTWTFSS	06:05 AM GHY Guwahati	14h 20m 582 KM 24 stops	08:25 PM BJU Barauni 37 KM from ARG
04605 - GHY SVDK SPL Runs onMTWTFSS	11:00 PM GHY Guwahati	14h 30m 582 KM 33 stops	01:30 PM BJU Barauni 37 KM from ARG
01066 - NNGE CSMT SPL Runs onMTWTFSS	06:05 AM GHY Guwahati	14h 30m 582 KM 34 stops	08:35 PM BJU Barauni 37 KM from ARG
09526 - NHLN HAPA SPL Runs onMTWTFSS	02:50 PM RNY Rangiya 32 KM from GHY	14h 46m 608 KM 49 stops	05:36 AM SPP Shahpur Patoree 37 KM from ARG	Starting from ₹260
05811 - NHLN TDL SPECIAL Runs onMTWTFSS	08:55 PM RNY Rangiya 32 KM from GHY	14h 55m 572 KM 30 stops	11:50 AM BJU Barauni 37 KM from ARG
05641 - GHY GTNR SPECIAL Runs onMTWTFSS	07:40 PM GHY Guwahati	14h 55m 582 KM 25 stops	10:35 AM BJU Barauni 37 KM from ARG
05841 - RPAN TDL SPECIAL Runs onMTWTFSS	08:55 PM RNY Rangiya 32 KM from GHY	14h 55m 572 KM 28 stops	11:50 AM BJU Barauni 37 KM from ARG
04679 - KYQ SVDK SPECIAL Runs onMTWTFSS	06:00 AM KYQ Guwahati 6 KM from GHY	15h 10m 576 KM 28 stops	09:10 PM BJU Barauni 37 KM from ARG
05609 - SCL GKP SPECIAL Runs onMTWTFSS	06:10 AM GHY Guwahati	15h 12m 608 KM 26 stops	09:22 PM MOG Mohiuddinnagar 29 KM from ARG
05624 - KYQ NDLS SPECIAL Runs onMTWTFSS	11:00 PM KYQ Guwahati 6 KM from GHY	15h 34m 567 KM 24 stops	02:34 PM ROA Rusera Ghat 13 KM from ARG
05652 - GHY GTNR SPECIAL Runs onMTWTFSS	02:00 PM GHY Guwahati	15h 34m 619 KM 27 stops	05:34 AM SPP Shahpur Patoree 37 KM from ARG
05633 - NNGE GKP SPECIAL Runs onMTWTFSS	02:00 PM GHY Guwahati	15h 34m 619 KM 24 stops	05:34 AM SPP Shahpur Patoree 37 KM from ARG
05978 - DBRG GKP SPECIAL Runs onMTWTFSS	07:55 PM GHY Guwahati	15h 45m 596 KM 31 stops	11:40 AM SPJ Samastipur 14 KM from ARG	Starting from ₹280
05614 - GHY TDL SPECIAL Runs onMTWTFSS	09:30 AM GHY Guwahati	15h 45m 582 KM 28 stops	01:15 AM BJU Barauni 37 KM from ARG
05866 - RPAN RKMP SPL Runs onMTWTFSS	11:10 AM RNY Rangiya 32 KM from GHY	15h 50m 572 KM 33 stops	03:00 AM BJU Barauni 37 KM from ARG
05877 - RPAN RKMP SPL Runs onMTWTFSS	11:10 AM RNY Rangiya 32 KM from GHY	15h 50m 572 KM 36 stops	03:00 AM BJU Barauni 37 KM from ARG
02525 - KYQ ANVT SPECIAL Runs onMTWTFSS	10:45 PM KYQ Guwahati 6 KM from GHY	15h 50m 576 KM 27 stops	02:35 PM BJU Barauni 37 KM from ARG
05919 - NTSK BGKT SPL Runs onMTWTFSS	11:50 PM GHY Guwahati	16h 30m 582 KM 72 stops	04:20 PM BJU Barauni 37 KM from ARG
05974 - DBRG JYG SPECIAL Runs onMTWTFSS	05:25 PM GHY Guwahati	16h 34m 596 KM 28 stops	10:00 AM SPJ Samastipur 14 KM from ARG
05626 - KYQ DLI SPECIAL Runs onMTWTFSS	06:30 AM KYQ Guwahati 6 KM from GHY	16h 51m 562 KM 30 stops	11:21 PM BGS Begusarai 46 KM from ARG
05901 - DBRG MFP SPECIAL Runs onMTWTFSS	08:55 AM GHY Guwahati	17h 35m 596 KM 29 stops	02:30 AM SPJ Samastipur 14 KM from ARG
05616 - GHY SGNR SPECIAL Runs onMTWTFSS	06:00 PM GHY Guwahati	17h 40m 596 KM 45 stops	11:40 AM SPJ Samastipur 14 KM from ARG	Starting from ₹285
05636 - GHY SGNR SPL Runs onMTWTFSS	06:15 PM GHY Guwahati	17h 45m 596 KM 46 stops	12:00 PM SPJ Samastipur 14 KM from ARG
05611 - KYQ TDL SPL Runs onMTWTFSS	05:30 AM KYQ Guwahati 6 KM from GHY	19h 55m 584 KM 39 stops	01:25 AM MKA Mokameh 44 KM from ARG

Other Trains from Guwahati to Angar Samastipur

3 found from KYQ, GHY to SPJ, BARH, MKA

Train name and number	Starting station	Duration	Ending station
19710 - Kamakhya - Udaipur City Kavi Guru Express Runs onMTWTFSS	06:30 PM KYQ Guwahati 6 KM from GHY	17h 15m 591 KM 43 stops	11:45 AM SPJ Samastipur 14 KM from ARG
15646 - DBRG LTT EXP Runs onMTWTFSS	04:45 PM GHY Guwahati	18h 16m 611 KM 55 stops	11:01 AM BARH Barh 43 KM from ARG	Starting from ₹430
15955 - Brahmaputra Mail Runs onMTWTFSS	02:35 PM KYQ Guwahati 6 KM from GHY	20h 39m 584 KM 44 stops	11:14 AM MKA Mokameh 44 KM from ARG

Train name and number

Starting station

Duration

Ending station

19710 - Kamakhya - Udaipur City Kavi Guru Express

Runs onMTWTFSS

06:30 PM

KYQ

Guwahati

6 KM from GHY

17h 15m

591 KM

43 stops

11:45 AM

SPJ

Samastipur

14 KM from ARG

15646 - DBRG LTT EXP

Runs onMTWTFSS

04:45 PM

GHY

Guwahati

18h 16m

611 KM

55 stops

11:01 AM

BARH

Barh

43 KM from ARG

Starting from ₹430

15955 - Brahmaputra Mail

Runs onMTWTFSS

02:35 PM

KYQ

Guwahati

6 KM from GHY

20h 39m

584 KM

44 stops

11:14 AM

MKA

Mokameh

44 KM from ARG

Trains from Angar Samastipur to Guwahati

Trains originating from Guwahati

Train name and number	Starting station	Duration	Ending station
15888 - GHY BPB VISTADO	06:45 AM GHY Guwahati	7h 50m 167 KM 5 stops	02:35 PM BPB Badarpur
15615 - GHY SCL EXPRESS	11:55 PM GHY Guwahati	13h 182 KM 29 stops	12:55 PM SCL Silchar
15617 - GHY DLCR EXPRESS	10:15 PM GHY Guwahati	11h 30m 200 KM 14 stops	09:45 AM DLCR Dullabcherra
15611 - RNY SCL EXPRESS	07:00 PM RNY Rangiya	12h 30m 215 KM 11 stops	07:30 AM SCL Silchar
12088 - GHY NHLN VISTAD	01:45 PM GHY Guwahati	5h 50m 221 KM 9 stops	07:35 PM NHLN Naharlagun

Trains passing through Guwahati

Train name and number	Starting station	Duration	Ending station
15818 - DONYI POLO EXP	08:20 PM NHLN Naharlagun	13h 30m 153 KM 20 stops	09:50 AM SKHV Dimapur
15817 - DONYI POLO EXP	05:45 PM SKHV Dimapur	12h 55m 153 KM 20 stops	06:40 AM NHLN Naharlagun
12067 - JANSATABDI EXP	06:20 AM GHY Guwahati	6h 45m 253 KM 11 stops	01:05 PM JTTN Jorhat
15665 - BG EXPRESS	02:40 PM GHY Guwahati	9h 10m 260 KM 15 stops	11:50 PM MXN Mariani
12047 - NLP JANSHATABDI	09:50 AM GHY Guwahati	6h 25m 263 KM 9 stops	04:15 PM NLP Lakhimpur

Trains reaching to Angar Samastipur

Train name and number	Starting station	Duration	Ending station
05221 - SHC BJU SPL	04:40 PM SHC Saharsa	2h 45m 76 KM 6 stops	07:25 PM BJU Barauni
03266 - RGD KGG SPL	06:10 AM RGD Rajgir	6h 50m 118 KM 10 stops	01:00 PM KGG Khagaria
13419 - JANASEWA EXP	02:05 PM BGP Bhagalpur	6h 35m 187 KM 19 stops	08:40 PM MFP Muzaffarpur
12538 - PRRB MFP EXP	05:10 AM PRRB Prayagraj	13h 361 KM 21 stops	06:10 PM MFP Muzaffarpur
13029 - HWH MKA EXPRESS	11:20 PM HWH Howrah	11h 10m 398 KM 51 stops	10:30 AM MKA Mokameh

Trains passing through Angar Samastipur

Train name and number	Starting station	Duration	Ending station
19305 - DADN KYQ EXP	12:45 PM DADN Delhi	1d 23h 45m 37 stops	12:30 PM KYQ Guwahati
03221 - RGD MCTM SPL	02:00 PM RGD Rajgir	1d 9h 5m 30 stops	11:05 PM MCTM
03222 - RGD SUMMER SPL	03:15 AM MCTM	1d 11h 45m 30 stops	03:00 PM RGD Rajgir
03250 - PNBE RGD SPL	09:20 AM PNBE Patna	3h 69 KM 13 stops	12:20 PM RGD Rajgir
03249 - RGD PNBE SPL	03:10 PM RGD Rajgir	3h 10m 69 KM 13 stops	06:20 PM PNBE Patna

Guwahati to Angar Samastipur Trains

Looking for Guwahati to Angar Samastipur trains? You can choose from a large number of trains running regularly on this route. Guwahati to Angar Samastipur trains is considered to be the most preferred and efficient mode of transportation for commuting between these two cities. There are frequent daily trains that run between these cities.On a weekly basis, there are 13 trains running between Guwahati to Angar Samastipur.To get accurate information regarding Guwahati to Angar Samastipur trains, Guwahati Angar Samastipur Railway Timetable, and Guwahati to Angar Samastipur Train Fare, you can visit the Goibibo app or website. You can also book train ticket online through Goibibo in a few steps. The user-friendly interface, easy booking process and attractive offers on train ticket booking help the travellers in booking their tickets at the most reasonable prices. You can also do tatkal train ticket booking for Guwahati to Angar Samastipur Trains through Goibibo.

Guwahati to Angar Samastipur train timings and fare are the two main factors that compel travellers to opt for Guwahati to Angar Samastipur Trains for a hassle-free journey. 12423 - RAJDHANI EXP is the fastest among the Guwahati to Angar Samastipur Trains. It departs from Guwahati Railway Station(GHY) at 06:45 AM and arrives at Guwahati Railway Station(BJU) at 07:05 PM, covering the distance in just 12 hrs 20 mins .While looking for an early morning train from Guwahati to Angar Samastipur, you can choose to travel via 22411 - ARUNACHAL EXP. It takes 13 hrs 5 mins to complete the journey, starting from Rangiya Junction(RNY) at 03:15 AM and reaching Angar Samastipur at 04:20 PM.

The first train from Guwahati to Angar Samastipur is 22411 - ARUNACHAL EXP departing at 03:15 AM from Rangiya Junction(RNY).Some popular weekly trains on Guwahati to Angar Samastipur train route are 15909 - AVADH ASSAM EXP, 15658 - BRAHMAPUTRA EXP, 12423 - RAJDHANI EXP. Every Friday 15909 - AVADH ASSAM EXP departs from Guwahati at 10:00 PM and arrives at Agra at 09:45 PM covering the entire distance in 17 hrs 25 mins .The boarding station for all Guwahati to Angar Samastipur trains are the Guwahati Railway Station(GHY), Kamakhya Railway Station(KYQ), Rangiya Junction(RNY) while deboarding at Angar Samastipur can be at Samastipur Junction(SPJ), Mokameh Junction(MKA), Barh Railway Station(BARH), Barauni Junction(BJU), Begu Sarai Railway Station(BGS), Mohiuddinnagar Railway Station(MOG), Khagaria Junction(KGG), Shahpur Patoree Railway Station(SPP), Rusera Ghat Railway Station(ROA).For all of the trains running on this route, you can check the live train running status, running history and PNR status on the Goibibo app and the website also you can check PNR status on MakeMyTrip. Goibibo in collaboration with Indian railways also offers IRCTC registration and signup through its IRCTC Create User Id page. The stations are well-connected with the rest of the city with easy conveyance options. The Guwahati to Angar Samastipur train route witnesses regular rush of travellers. However, the large number of trains on this route provides direct and easy connectivity catering to the needs of all types of travellers.

Book your Guwahati to Angar Samastipur Trains on Goibibo

Angar Samastipur is one of the popular cities of India. There are plenty of amazing tourist spots in Angar Samastipur that can make your journey memorable. You can book a Guwahati to Angar Samastipur Train and visit this gorgeous city with family and friends.
In order to explore the city’s places of interest, you can board the Guwahati to Angar Samastipur train. You can book your train from Guwahati to Angar Samastipur on Goibibo and enjoy a hassle-free trip. You can either make your bookings on Goibibo’s website or via the official app.

Guwahati to Angar Samastipur Train Timings

There are plenty of trains running on the Guwahati to Angar Samastipur route everyday, so the train seat availability is sufficient. You can board a train to Angar Samastipur from the popular railway stations of your city and reach there within a short period of time. Moreover, you will face no problem in boarding any Guwahati to Angar Samastipur train, as the train journey is comfortable as well as secure.

How to Book your Guwahati to Angar Samastipur Trains with Goibibo?

Step 1: To book your Guwahati to Angar Samastipur trains, visit Goibibo.com.
Step 2: Enter your journey date, departure station, and arrival station. All the trains of that particular date will appear on your screen.
Step 3: Click on the seat class, and you’ll be redirected to another page where you can see the available coupons and cash rewards.
Step 4: Enter your personal details, click on ‘Continue’, and you’ll reach the payment part.
Step 5: Choose the payment option, make the payment, and the ticket confirmation will be sent to your E-Mail and mobile number.

Guwahati To Angar Samastipur Trains

Popular Trains from Guwahati to Angar Samastipur

Covid Special Trains from Guwahati to Angar Samastipur

Other Trains from Guwahati to Angar Samastipur

Trains originating from Guwahati

Trains passing through Guwahati

Trains reaching to Angar Samastipur

Trains passing through Angar Samastipur

Popular Train Routes From Guwahati

Popular Train Routes To Guwahati

Popular Train Routes To Angar Samastipur

Popular Train Routes From Angar Samastipur