Raka and Anumati are variations of Pournamasi ( full moon ).
Kuhu and Sinivali are variations of Amavasya ( new moon ).
सम्पूर्णेन्दुतिथिः राका - Purnima with an absolutely full moon.
न्यूनेन्दुकला पूर्णिमा अनुमतिः चतुर्दशीयुक्ता वा - Purnima with moon that is not full or one in which chaturdashi overlaps.
Kuhu ( कुहूः) - An amavasya which is totally dark with moon totally absent is called Kuhu.
Sinivali ( सिनीवाली ) - An amavasya in which moon is partly visible.
दृष्टचन्द्रा सिनीवालि नष्टचन्द्रा कुहूर्मता |
Like nakshatras these are also divinities in Veda.
श्रद्धा त्वङ्गिरसः पत्नी चतस्रोऽसूत कन्यकाः |
सिनिवाली कुहू राका चतुर्थ्यनुमतिस्तथा ||
They are daughters of Sage Angirasa and his wife Shraddha.
Kuhu and Sinivali are variations of Amavasya ( new moon ).
सम्पूर्णेन्दुतिथिः राका - Purnima with an absolutely full moon.
न्यूनेन्दुकला पूर्णिमा अनुमतिः चतुर्दशीयुक्ता वा - Purnima with moon that is not full or one in which chaturdashi overlaps.
Kuhu ( कुहूः) - An amavasya which is totally dark with moon totally absent is called Kuhu.
Sinivali ( सिनीवाली ) - An amavasya in which moon is partly visible.
दृष्टचन्द्रा सिनीवालि नष्टचन्द्रा कुहूर्मता |
Like nakshatras these are also divinities in Veda.
श्रद्धा त्वङ्गिरसः पत्नी चतस्रोऽसूत कन्यकाः |
सिनिवाली कुहू राका चतुर्थ्यनुमतिस्तथा ||
They are daughters of Sage Angirasa and his wife Shraddha.