Depending on the year of the certificate you can get it the same day of your appointment. There are no same day appointments. 1963-Present with the exception of 1972-1977 are available same day.
You will receive your birth certificate the same day as your appointment if you were born after 1963 (except 1972-1977). If you were born before 1963 or between 1972-1977 then your birth certificate will be mailed to you within 20 days.
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