The UK and most of Pan-Asian/Arabian peninsula celebrate it in March. North America and it's peripheries, including the 1,707 islands of the Philippine archipelago celebrate it in May.
Motherhood has indeed changed me into a more caring individual. I celebrate it everyday as I experience my daughter's growth and changes. Each mother has her own personal experience in being a mom. But as sisters we share a bond not only in the scars of pregnancy and giving birth, more in the dream of great things for our offspring.