On Twitter, the web version appeared deferred tweets

TweetDeck developers have announced that the possibility of sending stations at the selected time, one of the most useful functions of the official client, is now available in browser-based version of Twitter.

Tweet scheduling on https://t.co/8FModRv1sl? Yes please! Starting today, we're experimenting with bringing one of @TweetDeck'S handiest time-saving features into Twitter. Tell us what you think if you're part of the experiment. pic.twitter.com/4pI9xrbPEP

- TweetDeck (@TweetDeck) November 20, 2019

Updating takes place gradually, so that will have to wait a while before it becomes available to all.

Check whether you have a new feature that is easy accessible. The creation of a post box to the right of Emoji icons should appear in another - in the form of three vertical dots. When you click on it there is a button "Send Later", which opens the screen for selecting the date and time of publication.