Today and This day

Today noun - The time currently existing or in progress.

This day is a synonym for today in presently topic. In some cases you can use "This day" instead the word "Today" as an adverb or a noun, when it comes to topics like existing time. popular alternative

Today is a synonym for this day in presently topic. You can use "Today" instead the phrase "This day" as a noun or an adverb, if it concerns topics such as existing time. popular alternative