Days continue to go by for Keith Urban .

And some of those days find him preparing for a return to the stage. The country star made his first public appearance since Nicole Kidman filed for divorce Sept. 30, stepping out in Hersey, Pa.

In pictures obtained by TMZ , Keith deboarded a private jet during the Oct. 2 outing, hours before his concert at Giant Center for his High and Alive World Tour. He kept his travel outfit low key, sporting a gray jacket, black T-shirt and black baseball cap. He was also notably not wearing his wedding ring as he carried a leather duffle bag.

As for Nicole, who shares Sunday Rose , 17, and Faith Margaret , 14, with Keith, she spent the day after her divorce filing taking in some sister time in Nashville, going on a hik

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