“Hotogov Mailgan’s themes are the sky, tradition and the arts. Her symbol is pale light. In Siberia, Hotogov Mailgan illuminates the night sky with Her heavenly sparkle. She is the Queen of the Sky, a creative force for personal empowerment and the manifester of the life energies in and around us.
Between June 21 and June 29 the skies in Russia always appear light gray at night because of the northern location. The effect throughout St. Petersburg is very magical, casting unique shadows on the lavender, pink and yellow pastel-colored buildings. To celebrate this beauty, the citizens enjoy traditional Russian ballets, theatrical performances and music. So, get out the theme music from Dr. Zhivago, rent a ballet featuring Baryshnikov, or cook yourself up some Russian dumplings (vareniki) and invite the Goddess to join you.
If you perform any magic today, try putting up some pastel-colored curtains around the space to filter the outside light so it suits Hotogov Mailgan. Or darken the room and use glow-in-the-dark stars to mark the magical circle so you’re literally surrounded by Her power.
Try taking a bubble bath and dotting the surface of the water with glitter to look like Hotogov Mailgan’s night sky. Then, sit, relax and meditate, absorbing the hopeful, dreamy energy that her stars inspire in people everywhere.”
(Patricia Telesco, “365 Goddess: a daily guide to the magic and inspiration of the goddess”.)
All I could find on the Goddess Hotogov Mailgan was that She was a Goddess worshiped by the Buriat people of Siberia. She was called “Crooked Back” and was the Goddess of the night heavens and creator of people. 
Curtin, Jeremiah. A Journey in Southern Siberia: The Mongols, Their Religion and Their Myths, “Tuget” (p. 65).
Ethnic Russia, “Buryatia“.
Hays, Jeffrey. Factsanddetails.com, “Shamanism in Russia and Mongolia“.