“Big Brother 2023” actually refers to several different versions around the world, but the two that most people searched for in 2023 were the U.S. and U.K. editions.

Quick Scoop: Main Dates

United States – Big Brother 25 (CBS)

  • Season 25 (the 2023 U.S. season) premiered on August 2, 2023 on CBS, after a 25th anniversary special on July 26, 2023.
  • New episodes in 2023 generally aired:
    • Sundays (taped) in prime time.
* Tuesdays (taped) in prime time.

* Thursdays (live eviction) in prime time.
  • Episodes were available to stream on Paramount+ the following day.

United Kingdom – Big Brother 2023 (ITV reboot)

  • The U.K. civilian reboot (often called Big Brother 2023 / BB20) started on 8 October 2023 on ITV2 and ITVX.

Other 2023 versions (quick mentions)

  • Germany’s celebrity edition “Promi Big Brother 2023” (season 11) aired from 20 November 2023 to 4 December 2023 on Sat.1.

Simple HTML Table of Key 2023 Start Dates

[7] [2] [3]
Version Country Season / Name Channel / Platform Start date (2023)
Big Brother 25 USA Main CBS edition CBS, Paramount+ 2 August 2023
Big Brother 2023 (BB20) UK Civilian reboot ITV2, ITVX 8 October 2023
Promi Big Brother 2023 Germany Celeb edition (season 11) Sat.1 20 November 2023

Quick forum-style takeaway

If you’re asking “when is Big Brother 2023?”, you’re probably thinking of either the U.S. Big Brother 25 (started 2 Aug 2023 on CBS) or the U.K. reboot (started 8 Oct 2023 on ITV2), with other countries like Germany running their own 2023 editions later in the year.

TL;DR:

  • U.S. Big Brother 2023 (Season 25) started 2 August 2023.
  • U.K. Big Brother 2023 reboot started 8 October 2023.
  • German Promi Big Brother 2023 started 20 November 2023.

Information gathered from public forums or data available on the internet and portrayed here.