Agnipurana 209.16

209.16

aśvayukacchuklanavamī dvādaśī kārttike tathā /
tṛtīyā caiva māghasya tathā bhādrapadasya ca //

the ninth of the bright fortnight of Āśvina, and likewise the twelfth of Kārttika; / the third of Māgha, and likewise of Bhādrapada;