विजया भानुसप्तमी

saptamI tithi on a Sunday is as sacred as a solar eclipse. Particularly good for worshipping Surya. When zukla saptamI is present at sunrise, it is called vijayA.

अमावस्या तु सोमेन सप्तमी भानुना सह। चतुर्थी भूमिपुत्रेण सोमपुत्रेण चाष्टमी। चतस्रस्तिथयस्त्वेताः सूर्यग्रहणसन्निभाः॥