Returns generally are in pending status for 24–48 hours but sometimes state returns stay in pending status for several days or even longer. Please see What does pending mean? for more detailed information.
You can check out this Help Article for instructions on how to track your state refund.
Additionally, once the IRS has accepted your e-filed return, you can check the status of your refund by going directly to: https://www.irs.gov/refunds
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