Independence Day and Valentine's Day

Below is a conversation between Shishir and his Grandfather (Tata)

Tata: August 15th is our Independence Day
Shishir: So is it one bigger than Valentine's Day?

Below is another conversation between Shishir and his Mom (Amma), preparing for school exams:

Amma: What are the national festivals of India?
Shishir: Gandhi Jayanti, Independence day and Valentine's Day.