2 March 2017 – Due date for furnishing of challan-cum-statement in respect of tax deducted under Section 194-IA in the month of January, 2017
7 March 2017 – Due date for deposit of Tax deducted/collected for the month of February, 2017. However, all sum deducted/collected by an office of the government shall be paid to the credit of the Central Government on the same day where tax is paid without production of an Income-tax Challan
15 March 2017 – Due date for furnishing of Form 24G by an office of the Government where TDS for the month of February, 2017 has been paid without the production of a challan
15 March 2017 – Fourth instalment of advance tax for the assessment year 2017-18.
15 March 2017 – Due date for payment of whole amount of advance tax in respect of assessment year 2017-18 for assessees covered under presumptive scheme of Section 44AD.
17 March 2017 – Due date for furnishing of challan-cum-statement in respect of tax deducted under Section 194-IA in the month of January, 2017
30 March 2017 – Due date for furnishing of challan-cum-statement in respect of tax deducted under Section 194-IA in the month of February, 2017
31 March 2017 – Last date for declaration of undisclosed income under Pradhan MantriGaribKalyanYojana, 2016.
31 March 2017 – Due date for payment of second installment (i.e., 25% of tax, surcharge and penalty) under Income Declaration Scheme, 2016.
Source: Income Tax
Same point is covered under the due date 2nd march and 17th march. Please clarify.