If you would like to ask your customers to select a date for shipping before they checkout then follow the instructions below.  

Click Settings from the main menu

Click on the Shipping option:

Scroll down to the Date picker section and click Enable:

Check the days of the week that you offer shipping

Click Save

Please allow a couple of minutes for your changes to be updated within Shopify. 

Now when your customers visit your shopping cart page and select Shipping they will be asked to choose a date before they can proceed to the checkout. 

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