From
To
Date
Sat, Jan 10

Authorised IRCTC partner

Kanchipuram To Srirangam Trains

Popular Trains from Kanchipuram to Srirangam

43 found from CJ, ARV, MLMR, TBM, KPD, CGL, AJJ to TJ, TPJ, SRGM

Train name and numberStarting stationDurationEnding station

16751 - MS RMM EXPRESS

Runs onMTWTFSS

09:30 PM

CGL

Chengalpattu

34 KM from CJ

6h 25m

253 KM

22 stops

03:55 AM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹225

22671 - TEJAS EXPRESS

Runs onMTWTFSS

06:22 AM

TBM

Chennai

45 KM from CJ

3h 28m

283 KM

5 stops

09:50 AM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹700

20627 - MS NCJ VB EXP

Runs onMTWTFSS

05:22 AM

TBM

Chennai

45 KM from CJ

3h 33m

283 KM

9 stops

08:55 AM

TPJ

Tiruchirappalli

7 KM from SRGM

16159 - MS MAQ EXPRESS

Runs onMTWTFSS

12:10 AM

CGL

Chengalpattu

34 KM from CJ

3h 28m

247 KM

49 stops

03:38 AM

SRGM

Tiruchirappalli

Starting from ₹115

20681 - SILAMBU SF EXP

Runs onMTWTFSS

09:20 PM

CGL

Chengalpattu

34 KM from CJ

4h 25m

253 KM

22 stops

01:45 AM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹230

16865 - UZHAVAN EXPRESS

Runs onMTWTFSS

11:25 PM

CGL

Chengalpattu

34 KM from CJ

6h 19m

231 KM

14 stops

05:45 AM

TJ

Thanjavur

49 KM from SRGM

Starting from ₹505

22661 - MS RMM SF EXP

Runs onMTWTFSS

06:50 PM

CGL

Chengalpattu

34 KM from CJ

3h 48m

247 KM

18 stops

10:38 PM

SRGM

Tiruchirappalli

Starting from ₹220

16127 - MS GURUVAYUR EXP

Runs onMTWTFSS

11:35 AM

CGL

Chengalpattu

34 KM from CJ

3h 58m

247 KM

48 stops

03:33 PM

SRGM

Tiruchirappalli

Starting from ₹395

12605 - PALLAVAN SF EXP

Runs onMTWTFSS

04:35 PM

CGL

Chengalpattu

34 KM from CJ

3h 39m

247 KM

14 stops

08:14 PM

SRGM

Tiruchirappalli

Starting from ₹130

16101 - MS QLN EXPRESS

Runs onMTWTFSS

05:45 PM

CGL

Chengalpattu

34 KM from CJ

3h 55m

253 KM

23 stops

09:40 PM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹200

12635 - VAIGAI SF EXP

Runs onMTWTFSS

02:10 PM

CGL

Chengalpattu

34 KM from CJ

3h 20m

247 KM

13 stops

05:30 PM

SRGM

Tiruchirappalli

Starting from ₹130

20635 - ANANTAPURI EXP

Runs onMTWTFSS

08:45 PM

CGL

Chengalpattu

34 KM from CJ

4h 40m

253 KM

28 stops

01:25 AM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹230

22657 - TBM NCJ SF EXP

Runs onMTWTFSS

08:00 PM

CGL

Chengalpattu

34 KM from CJ

4h 25m

253 KM

13 stops

12:25 AM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹230

22675 - CHOZHAN SF EXP

Runs onMTWTFSS

08:55 AM

CGL

Chengalpattu

34 KM from CJ

6h 20m

253 KM

19 stops

03:15 PM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹255

20605 - MS TCN SF EXP

Runs onMTWTFSS

04:55 PM

CGL

Chengalpattu

34 KM from CJ

6h 50m

253 KM

30 stops

11:45 PM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹425

20665 - TEN VANDEBHARAT

Runs onMTWTFSS

03:32 PM

TBM

Chennai

45 KM from CJ

3h 28m

283 KM

10 stops

07:00 PM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹865

12633 - KANYAKUMARI EXP

Runs onMTWTFSS

06:15 PM

CGL

Chengalpattu

34 KM from CJ

4h 10m

253 KM

15 stops

10:25 PM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹555

12653 - ROCKFORT SF EXP

Runs onMTWTFSS

12:30 AM

CGL

Chengalpattu

34 KM from CJ

3h 33m

247 KM

13 stops

04:03 AM

SRGM

Tiruchirappalli

Starting from ₹220

16351 - NAGARCOIL EXP

Runs onMTWTFSS

06:35 PM

CJ

Kanchipuram

5h 3m

247 KM

45 stops

11:38 PM

SRGM

Tiruchirappalli

Starting from ₹210

22101 - LTT MADURAI EXP

Runs onMTWTFSS

10:05 AM

CJ

Kanchipuram

5h 20m

253 KM

25 stops

03:25 PM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹245

22632 - BKN MDU SF EXP

Runs onMTWTFSS

10:55 AM

CGL

Chengalpattu

34 KM from CJ

3h 48m

247 KM

42 stops

02:43 PM

SRGM

Tiruchirappalli

Starting from ₹510

12663 - HWH TPJ SUF EXP

Runs onMTWTFSS

10:00 PM

CGL

Chengalpattu

34 KM from CJ

3h 52m

247 KM

24 stops

01:52 AM

SRGM

Tiruchirappalli

Starting from ₹220

12637 - PANDIAN SF EXP

Runs onMTWTFSS

10:35 PM

CGL

Chengalpattu

34 KM from CJ

4h 10m

253 KM

12 stops

02:45 AM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹230

12631 - NELLAI SF EXP

Runs onMTWTFSS

09:45 PM

CGL

Chengalpattu

34 KM from CJ

4h 19m

253 KM

15 stops

02:05 AM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹230

12642 - NZM CAPE SF EXP

Runs onMTWTFSS

05:05 PM

CGL

Chengalpattu

34 KM from CJ

4h 20m

253 KM

24 stops

09:25 PM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹230

12652 - SMPARK KRNT EXP

Runs onMTWTFSS

05:05 PM

CGL

Chengalpattu

34 KM from CJ

4h 20m

253 KM

16 stops

09:25 PM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹230

12667 - MS NCJ SF EXP

Runs onMTWTFSS

08:00 PM

CGL

Chengalpattu

34 KM from CJ

4h 25m

253 KM

11 stops

12:25 AM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹230

20498 - RMM HUMSAFAR SF

Runs onMTWTFSS

10:35 AM

CGL

Chengalpattu

34 KM from CJ

4h 30m

253 KM

44 stops

03:05 PM

TPJ

Tiruchirappalli

7 KM from SRGM

12661 - POTHIGAI SF EXP

Runs onMTWTFSS

08:30 PM

CGL

Chengalpattu

34 KM from CJ

4h 34m

253 KM

19 stops

01:05 AM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹230

12693 - PEARL CITY EXP

Runs onMTWTFSS

08:10 PM

CGL

Chengalpattu

34 KM from CJ

4h 34m

253 KM

20 stops

12:45 AM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹230

20481 - TPJ SF HUMSAFAR

Runs onMTWTFSS

10:40 AM

CGL

Chengalpattu

34 KM from CJ

4h 50m

253 KM

20 stops

03:30 PM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹255

12665 - HWH CAPE SF EXP

Runs onMTWTFSS

09:00 PM

CGL

Chengalpattu

34 KM from CJ

5h 25m

253 KM

30 stops

02:25 AM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹230

16368 - KASHI TAMIL EXP

Runs onMTWTFSS

05:20 AM

CJ

Kanchipuram

8h 15m

253 KM

38 stops

01:35 PM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹660

22623 - MS MDU SF EXP

Runs onMTWTFSS

11:00 PM

CGL

Chengalpattu

34 KM from CJ

6h 25m

253 KM

11 stops

05:25 AM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹255

22536 - BNRS RMM EXP

Runs onMTWTFSS

09:25 AM

CGL

Chengalpattu

34 KM from CJ

6h 50m

253 KM

36 stops

04:15 PM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹255

12689 - MAS NCJ SF EXP

Runs onMTWTFSS

08:00 PM

AJJ

Arakkonam

26 KM from CJ

7h 34m

275 KM

18 stops

03:35 AM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹295

22605 - PRR TEN SF EXP

Runs onMTWTFSS

02:45 PM

AJJ

Arakkonam

26 KM from CJ

7h 55m

275 KM

36 stops

10:40 PM

TPJ

Tiruchirappalli

7 KM from SRGM

20849 - BBS RMM SF

Runs onMTWTFSS

09:50 AM

MLMR

Melmaruvattur

48 KM from CJ

6h 25m

220 KM

28 stops

04:15 PM

TPJ

Tiruchirappalli

7 KM from SRGM

22614 - AYC RMM EXPRESS

Runs onMTWTFSS

03:00 PM

MLMR

Melmaruvattur

48 KM from CJ

6h 50m

220 KM

26 stops

09:50 PM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹425

16353 - KCG NCJ EXP

Runs onMTWTFSS

05:20 AM

KPD

Katpadi

62 KM from CJ

7h 10m

247 KM

28 stops

12:30 PM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹235

16788 - NAVYUG EXPRESS

Runs onMTWTFSS

05:20 AM

KPD

Katpadi

62 KM from CJ

7h 10m

247 KM

63 stops

12:30 PM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹250

22715 - KCG MDU SF EXP

Runs onMTWTFSS

07:00 PM

KPD

Katpadi

62 KM from CJ

7h 25m

247 KM

23 stops

02:25 AM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹280

16779 - TPTY RMM EXP

Runs onMTWTFSS

02:55 PM

ARV

Arni

58 KM from CJ

8h 30m

211 KM

24 stops

11:25 PM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹230

Covid Special Trains from Kanchipuram to Srirangam

31 found from TRT, ARV, TBM, KPD, CGL, AJJ to TPJ, SRGM

Train name and numberStarting stationDurationEnding station

06189 - TBM TN SF SPL

Runs onMTWTFSS

12:50 PM

CGL

Chengalpattu

34 KM from CJ

3h 30m

247 KM

19 stops

04:20 PM

SRGM

Tiruchirappalli

06053 - MS CAPE SF SPL

Runs onMTWTFSS

11:40 PM

CGL

Chengalpattu

34 KM from CJ

3h 34m

247 KM

20 stops

03:14 AM

SRGM

Tiruchirappalli

06157 - CGL TEN SF SPL

Runs onMTWTFSS

05:00 PM

CGL

Chengalpattu

34 KM from CJ

3h 49m

247 KM

17 stops

08:49 PM

SRGM

Tiruchirappalli

06011 - TBM CAPE SF SPL

Runs onMTWTFSS

04:00 PM

CGL

Chengalpattu

34 KM from CJ

3h 53m

247 KM

18 stops

07:53 PM

SRGM

Tiruchirappalli

06006 - GAYA CAPE SPL

Runs onMTWTFSS

05:30 PM

CGL

Chengalpattu

34 KM from CJ

3h 55m

253 KM

42 stops

09:25 PM

TPJ

Tiruchirappalli

7 KM from SRGM

06035 - Tambaram - Thiruvananthapuram North (Kochuveli) Special Fare AC Special

Runs onMTWTFSS

08:00 PM

CGL

Chengalpattu

34 KM from CJ

3h 57m

247 KM

27 stops

11:57 PM

SRGM

Tiruchirappalli

06039 - TBM CAPE SF SPL

Runs onMTWTFSS

01:05 AM

CGL

Chengalpattu

34 KM from CJ

4h 10m

253 KM

15 stops

05:15 AM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹415

06099 - TBM NCJ SF SPL

Runs onMTWTFSS

10:10 PM

CGL

Chengalpattu

34 KM from CJ

4h 10m

253 KM

12 stops

02:20 AM

TPJ

Tiruchirappalli

7 KM from SRGM

06127 - TBM KCVL SF SPL

Runs onMTWTFSS

08:35 AM

CGL

Chengalpattu

34 KM from CJ

4h 10m

253 KM

16 stops

12:45 PM

TPJ

Tiruchirappalli

7 KM from SRGM

06004 - BSBS CAPE SPL

Runs onMTWTFSS

09:05 AM

CGL

Chengalpattu

34 KM from CJ

4h 15m

253 KM

36 stops

01:20 PM

TPJ

Tiruchirappalli

7 KM from SRGM

06109 - TBM CAPE AC SPL

Runs onMTWTFSS

04:15 PM

CGL

Chengalpattu

34 KM from CJ

4h 23m

247 KM

22 stops

08:38 PM

SRGM

Tiruchirappalli

06302 - DWK MDU SPL

Runs onMTWTFSS

03:20 AM

TBM

Chennai

45 KM from CJ

4h 35m

283 KM

19 stops

07:55 AM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹385

06789 - MS TEN SPL

Runs onMTWTFSS

01:45 PM

CGL

Chengalpattu

34 KM from CJ

4h 35m

253 KM

12 stops

06:20 PM

TPJ

Tiruchirappalli

7 KM from SRGM

09520 - OKHA MDU SPL

Runs onMTWTFSS

02:05 AM

KPD

Katpadi

62 KM from CJ

4h 45m

239 KM

49 stops

06:50 AM

SRGM

Tiruchirappalli

Starting from ₹385

02122 - JBP MDU SF SPL

Runs onMTWTFSS

05:55 PM

CGL

Chengalpattu

34 KM from CJ

4h 45m

253 KM

22 stops

10:40 PM

TPJ

Tiruchirappalli

7 KM from SRGM

06091 - TBM TEN SPL

Runs onMTWTFSS

03:00 PM

CGL

Chengalpattu

34 KM from CJ

4h 53m

247 KM

24 stops

07:53 PM

SRGM

Tiruchirappalli

06037 - TBM CAPE SPL

Runs onMTWTFSS

06:30 PM

CGL

Chengalpattu

34 KM from CJ

4h 55m

253 KM

15 stops

11:25 PM

TPJ

Tiruchirappalli

7 KM from SRGM

07435 - Kacheguda - Nagercoil Weekly Special Fare Special

Runs onMTWTFSS

09:25 AM

KPD

Katpadi

62 KM from CJ

5h 3m

239 KM

27 stops

02:28 PM

SRGM

Tiruchirappalli

Starting from ₹385

07175 - SC QLN SPL

Runs onMTWTFSS

10:10 AM

KPD

Katpadi

62 KM from CJ

5h 10m

239 KM

35 stops

03:20 PM

SRGM

Tiruchirappalli

06093 - TBM CAPE SPL

Runs onMTWTFSS

11:02 PM

CGL

Chengalpattu

34 KM from CJ

6h 23m

253 KM

24 stops

05:25 AM

TPJ

Tiruchirappalli

7 KM from SRGM

06047 - TBM TPJ SPL

Runs onMTWTFSS

04:15 PM

CGL

Chengalpattu

34 KM from CJ

6h 25m

253 KM

14 stops

10:40 PM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹385

06101 - MS TEN SPL

Runs onMTWTFSS

01:02 AM

CGL

Chengalpattu

34 KM from CJ

6h 28m

253 KM

19 stops

07:30 AM

TPJ

Tiruchirappalli

7 KM from SRGM

06196 - BSBS CAPE SPL

Runs onMTWTFSS

01:02 AM

CGL

Chengalpattu

34 KM from CJ

6h 28m

253 KM

39 stops

07:30 AM

TPJ

Tiruchirappalli

7 KM from SRGM

06191 - TBM TPJ SPL

Runs onMTWTFSS

04:00 PM

CGL

Chengalpattu

34 KM from CJ

6h 40m

253 KM

15 stops

10:40 PM

TPJ

Tiruchirappalli

7 KM from SRGM

06108 - BSBS CAPE SPL

Runs onMTWTFSS

07:00 PM

KPD

Katpadi

62 KM from CJ

6h 52m

239 KM

27 stops

01:52 AM

SRGM

Tiruchirappalli

06148 - VLR TPJ SPL

Runs onMTWTFSS

11:34 PM

ARV

Arni

58 KM from CJ

7h 45m

211 KM

17 stops

07:20 AM

TPJ

Tiruchirappalli

7 KM from SRGM

07230 - HYB CAPE SPL

Runs onMTWTFSS

11:15 AM

KPD

Katpadi

62 KM from CJ

7h 50m

247 KM

36 stops

07:05 PM

TPJ

Tiruchirappalli

7 KM from SRGM

06088 - SHM TEN SF SPL

Runs onMTWTFSS

09:30 PM

AJJ

Arakkonam

26 KM from CJ

7h 55m

275 KM

37 stops

05:25 AM

TPJ

Tiruchirappalli

7 KM from SRGM

06185 - Tambaram - Podanur Special Fare Summer Special

Runs onMTWTFSS

05:35 PM

CGL

Chengalpattu

34 KM from CJ

8h 24m

253 KM

20 stops

02:00 AM

TPJ

Tiruchirappalli

7 KM from SRGM

07191 - KCG MDU SPL

Runs onMTWTFSS

12:25 PM

KPD

Katpadi

62 KM from CJ

9h 15m

247 KM

31 stops

09:40 PM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹385

09419 - ADI TPJ SPECIAL

Runs onMTWTFSS

01:05 PM

TRT

Tiruttani

38 KM from CJ

14h 30m

283 KM

30 stops

03:35 AM

TPJ

Tiruchirappalli

7 KM from SRGM

Other Trains from Kanchipuram to Srirangam

6 found from KPD, MLMR, CGL to TPJ, SRGM

Train name and numberStarting stationDurationEnding station

16129 - Chennai Egmore - Tuticorin Link Express

Runs onMTWTFSS

09:25 AM

CGL

Chengalpattu

34 KM from CJ

3h 51m

247 KM

24 stops

01:16 PM

SRGM

Tiruchirappalli

20973 - RMM HUMSAFAR SF

Runs onMTWTFSS

10:55 AM

CGL

Chengalpattu

34 KM from CJ

4h 10m

253 KM

44 stops

03:05 PM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹255

19603 - AII RMM HUMSAFAR

Runs onMTWTFSS

10:45 AM

CGL

Chengalpattu

34 KM from CJ

4h 20m

253 KM

27 stops

03:05 PM

TPJ

Tiruchirappalli

7 KM from SRGM

18496 - BBS RMM EXPRESS

Runs onMTWTFSS

09:50 AM

MLMR

Melmaruvattur

48 KM from CJ

5h 25m

220 KM

27 stops

03:15 PM

TPJ

Tiruchirappalli

7 KM from SRGM

16851 - MS RMM EXPRESS

Runs onMTWTFSS

08:15 PM

CGL

Chengalpattu

34 KM from CJ

6h 34m

253 KM

23 stops

02:50 AM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹140

17615 - KCG MDU EXPRESS

Runs onMTWTFSS

07:00 PM

KPD

Katpadi

62 KM from CJ

7h 25m

247 KM

21 stops

02:25 AM

TPJ

Tiruchirappalli

7 KM from SRGM

Starting from ₹680

Trains from Srirangam to Kanchipuram

Trains originating from Kanchipuram

Train name and numberStarting stationDurationEnding station

16175 - MS KIK EXPRESS

09:30 PM

TBM

Chennai

7h 19m

225 KM

13 stops

04:50 AM

KIK

Karaikal

06105 - TBM RMM SPECIAL

02:00 PM

TBM

Chennai

13h 30m

414 KM

23 stops

03:30 AM

RMM

Rameswaram

16103 - TBM RMM EXP

06:10 PM

TBM

Chennai

11h 35m

414 KM

17 stops

05:45 AM

RMM

Rameswaram

06103 - TBM RMD SPL

05:00 PM

TBM

Chennai

12h 15m

420 KM

23 stops

05:15 AM

RMD

Ramanathapuram

17643 - CIRCAR EXPRESS

04:00 PM

CGL

Chengalpattu

17h 25m

532 KM

34 stops

09:25 AM

COA

Kakinada

Trains passing through Kanchipuram

Train name and numberStarting stationDurationEnding station

12511 - RAPTISAGAR EXP

06:33 AM

GKP

Gorakhpur

2d 9h 7m

60 stops

03:40 PM

TVCN

12512 - RAPTISAGAR SF EX

06:35 AM

TVCN

2d 8h 40m

59 stops

03:15 PM

GKP

Gorakhpur

20601 - MAS BDNK SF EXP

10:30 PM

MAS

Chennai

10h 20m

11 stops

08:50 AM

BDNK

Bodinayakkanur

20602 - BDNK MAS SF EXP

08:55 PM

BDNK

Bodinayakkanur

11h

12 stops

07:55 AM

MAS

Chennai

22535 - RMM BNRS SF EXP

11:55 PM

RMM

Rameswaram

2d 1h 15m

34 stops

01:10 AM

BNRS

Trains reaching to Srirangam

Train name and numberStarting stationDurationEnding station

16850 - RMM TPJ EXPRESS

02:35 PM

RMM

Rameswaram

5h 35m

181 KM

17 stops

08:10 PM

TPJ

Tiruchirappalli

22628 - TVC TPJ SF EXP

11:35 AM

TVC

Trivandrum

8h 9m

319 KM

12 stops

07:45 PM

TPJ

Tiruchirappalli

05299 - MFP TPJ SPL

02:00 PM

MFP

Muzaffarpur

2d 4h 30m

1843 KM

15 stops

06:30 PM

TPJ

Tiruchirappalli

22497 - SGNR TPJ HUMSFAR

01:45 PM

SGNR

Shri Ganganagar

2d 8h 25m

2185 KM

38 stops

10:10 PM

TPJ

Tiruchirappalli

Trains passing through Srirangam

Train name and numberStarting stationDurationEnding station

06036 - Thiruvananthapuram North (Kochuveli) - Tambaram Special Fare AC Special

03:25 PM

TVCN

16h 15m

27 stops

07:40 AM

TBM

Chennai

22535 - RMM BNRS SF EXP

11:55 PM

RMM

Rameswaram

2d 1h 15m

34 stops

01:10 AM

BNRS

06154 - KCVL TBM SPL

03:45 PM

TVCN

17h 30m

26 stops

09:15 AM

TBM

Chennai

16367 - KASHI TAMIL EXP

08:30 PM

CAPE

Kanniyakumari

2d 3h 20m

37 stops

11:50 PM

BNRS

16849 - TPJ RMM EXPRESS

07:05 AM

TPJ

Tiruchirappalli

5h 20m

181 KM

17 stops

12:25 PM

RMM

Rameswaram