1Refers to a point in time just a little while before now; commonly used in spoken Japanese.
さっきから頭が痛い。
My head has been hurting since a little while ago.
さっき田中さんから電話がありましたよ。
Mr. Tanaka called a little while ago.
さっき言ったことをもう一度説明してもらえますか。
Could you explain again what you said a moment ago?
さっきまで雨が降っていたのに、もう止んだ。
It was raining until just a little while ago, but it's already stopped.