Tracks the 365-day requirement used in India's NRI tax residency rules. For certain Indian citizens or Persons of Indian Origin (PIO) visiting India, the 120-day test may apply if they have spent 365 days or more in India during the four years preceding the relevant tax year. This tracker only counts days toward the 365-day threshold over the preceding four years. It does not evaluate the separate 120-day requirement for the current tax year, income, citizenship/PIO status, or other tax-residency conditions. Reaching 365 days alone does not make you an Indian tax resident.
https://www.incometax.gov.in/iec/foportal/help/all-topics/e-filing-services/non%20resident%20-faq