Guide

http://www.goddess-guide.com/

Celtic world

Celtic triple moon goddess
https://www.google.com/search?site=imghp&tbm=isch&source=hp&biw=1280&bih=600&q=Celtic+triple+moon+goddess
https://www.youtube.com/results?search_query=Celtic+triple+moon+goddess

Triple Moon Goddess of Sanatan Dharma
https://www.google.com/search?site=imghp&tbm=isch&source=hp&biw=1280&bih=600&q=Triple+Moon+Goddess+of+Sanatan+Dharma
https://www.youtube.com/results?search_query=Triple+Moon+Goddess+of+Sanatan+Dharma

The above Picture speaks for itself, let me clearfy a few terms in English:

1) Purnima – Full moon of the month

2) Dashmi – 10th day of the month

3) Amavasya – The moonless night of the month

4) Panchami – 15th day of the month

The Welsh Triple Goddess
http://katewoodauthor.wordpress.com/tag/triple-deity/
http://www.angelfire.com/wizard/celticdeities/