Financial Year End reg

Dear Sir,

Kindly explain about the end of financial year for the following situations:

S1. A company has been corporated on the date of 01.05.2017.

S2. A company has been incorporated on the date of 01.12.2017.

Query:
The date of 31.03.2019 will be the end of Financial year in the above two situations?

Kindly explain.

With regards,

R. Marimuthu.