This document discusses the time of supply under the Goods and Services Tax (GST) in India. It defines time of supply as the time when goods or services are considered supplied. For goods, the time of supply is generally the date of invoice, date for invoice, or date of payment, depending on the circumstances. For services, the time of supply also depends on whether it is under forward charge, reverse charge, vouchers, or other instances. The document provides examples and outlines the specific provisions around time of supply for goods and services.