Thanks for posting your question here. We do not currently offer any functionality that would allow you to replicate the listing schedule you created yesterday with a different date, but I will share your comments in that regard with our Product Management team as a suggestion for future consideration.
At present, in order to replicate a listing schedule in this manner, you would need to schedule the listings in question once again from your saved listings page.
If you intend to schedule your items to post at the same time or with a set interval (from 10 minutes to 4 hours) between each, you should be able to do this in bulk by selecting all of these items on your Saved Listings page and clicking the “Schedule” button.
If you click the radio button next to “Post incrementally” in the “Schedule Type” section on the ensuing listing scheduler page, you will be presented with the option to separate the post times of your items by a set interval as mentioned above.