in this day and age - Phrases/Idioms
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Now, in the present, as in In this day and age divorce is a very common occurrence. This phrase is redundant, since this day and this age both mean “now”. [Early 1900s]