The timing of the payments has not been communicated with certainty.
Soon there will be a tool available through the IRS site link below that will allow you to check the status of your stimulus payment and update your direct deposit information. It is called Get My Payment.
Use the following links to keep up with the latest developments:
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I go on where's my payment everyday and get 24 hr lockout. It keep saying im entering wrong gross and refund amount. I entered 2018-2019. So therefore I can't put my Routing number or account number