Grammatically, the phrase "patriots day date in india" functions as a noun phrase. Its core component is the noun "date," which is modified by the compound noun "Patriots Day" and the prepositional phrase "in India." The entire phrase acts as a single unit to name a specific concept: the calendar date for a particular observance in a specific country.
India does not have a single, federally recognized national holiday officially titled "Patriots' Day." The observance is regional. The most prominent example is in the state of Manipur, where Patriots' Day is a public holiday observed annually on August 13. This date commemorates the execution of Manipuri prince Bir Tikendrajit Singh and other freedom fighters in 1891 following the Anglo-Manipur War. While other national days like Martyrs' Day (Shaheed Diwas) on January 30 or Parakram Divas on January 23 also honor national heroes, they are distinct and not officially named Patriots' Day.
Therefore, the specific date is entirely context-dependent and refers to a state-level observance rather than a nationwide one. The most accurate and widely understood answer for this term points specifically to the August 13th commemoration in Manipur. Any application or research on this topic must account for this regional specificity to avoid confusion with other national commemorative days in India.