Hi Anamika,
It's good to hear that you are planning a trip to Ireland in September.
Your passport must be valid up to the return date of your trip to the island of Ireland (which would be the case for you as it doesn't expire until March 2024). You can learn more about entering Ireland
on our website. You can also learn more about the British Irish Visa Scheme
on this website.
I hope this information is helpful to you.
Regards,
Eoin