I forgot to print my deposit slip and now it reflects todays date instead of the deposit date

I can help you set the date of the bank deposit, @userkmiller.

When trying to print your bank deposits, you can always set the date from the Date box. Check the screenshot below:

Here's how to print the deposit slip from the Bank Deposit page:

1. Go to the + New button in the upper left and choose Bank Deposit under Other.
2. On the Bank Deposit page, tick the box for the transaction you’re working on.  
3. Click the Print menu located in the lower part of the page.
4. Pick Print deposit slip and summary or Print deposit summary only.
5. Review the deposit slip and if everything looks fine, hit the Print button and Print again.
6. Press Save and close.

See this article for detailed information: Set up and print deposit slips.

If you need more help fine-tuning your alignment, here’s how to troubleshoot printing checks and forms.

Stay in touch if you have any other concerns or questions about QuickBooks. I’ll be glad to lend a helping hand. Enjoy the rest of the day.