I thought that April 14 is only celebrated in many parts of India as New Year (read details here). That was till I saw this chart produced by the Anand Ashram Foundation, Bali. It was then that I got to know that April 13 and 14 are celebrated as Indigenous New Year by many communities across Asia. Am reproducing from the chart i.e. below. In case of any errors or additions please mail me.

April 13 celebrated as

1. Cheti Chand – Sindh.

2. Navreh – Kashmir.

3. Chaiti – Dogra.

4. Vaisakhi – Punjab.

5. Sanskar Padwa – Goa.

6. Gudi Padwa – Maharashtra.

7. Thingyan – Myanmar.

8. Songran – Thailand.

9. Poshui jie – Dal (Southern Yunnan, China).

April 14 celebrated as

10. Baisakh – Nepal.

11. Pohela Baisakh – Bengal.

12. Cheirouba – Manipur.

13. Bohag Bihu – Assam.

14. Jur-Sital – Maithali, Bihar.

15. Vishuva Sanskranti – Odisha.

16. Vishu – Kerala.

17. Puthandu – Tamil Nadu.

18. Aluth Avuruddha – Sri Lanka.

19. Pi Mai Lao – Laos.

20. Chaul Chnam Thmey – Cambodia.

All credits to Anand Ashram Foundation, Bali.

 

Source: https://www.esamskriti.com/e/Culture/Festivals/Indigenous-New-Year-Asia,-April-13~14-1.aspx