Exchange rate determination under the Customs Act sets conversion rates for import and export goods effective 18 December 2020. Determination of exchange rates for customs purposes fixes specific conversion rates of listed foreign currencies into Indian rupees for imports and exports, effective 18 December 2020, under the Customs Act, by promulgating two schedules: Schedule I (per unit rates with separate columns for imported and exported goods) and Schedule II (rates per 100 units for certain currencies), replacing the earlier notification subject to prior acts or omissions.