On Navratri Day Six, Sunday, October 18, 2015, the fourth day of the Moon, Chaturthi, we invoke and worship Devi Skandamata, who as a further manifestation of Parvati, gives birth to Kartikeya, also known as Skanda.
Even being the son of Parvati and Shiva, He was raised by the 6 sisters, the Kritikas, whose stars shine so brightly, and so close to Earth, who the Greeks knew as the 7 sisters, the Pleides.
The worshipper of Devi Skandamata, besides receiving the blessings of protection and prosperity for the home, receives the added blessing of Swami Kartikeya, who, as the divine commander, slays demons.
The following mantra may be used for her invocation and worship:
YA DEVI SARVBHUTESHU MAM SKANDAMATA RUPENA SAMSTHITA
NAMASTASYAI NAMASTASYAI NAMASTASYAI NAMO NAMAH
SINHASANGATAM NITYAM PADMANCHIT KARDWAYA
SHUBHDASTU SADA DEVI SKANDMATA YASHASWINI