Estar is used for States of BeingEmotional, physical & mental states of (our bodies') being:Feelings/moods/emotions, physical conditions or appearances, civil state (married, single, divorced, dead) Placement State of Being: Location of things and people.Motion State of Being present progressive tense ( "-ing" form)
Ser is used with:Elements pertinent to your or others' identityphysical description, personality and character, nationality, race, gender, profession, origin, What things are made of Things which "Take Place" or "Occur" in Time: Dates, days, seasons, time, events, concerts, parties Possession