G Shock Time Zones

Do you know what time zone to set on my Casio GSck GA120A watch? 3

I have a Casio GSck GA120A model # 5229 watch and I see 48 major cities with a total of 29 time zones. However, my condition is not mentioned. I currently live in Texas and it's summer. Who should I set my time zone for? Don't hesitate if you need more information. Thank you very much !! :)

Automatically set your time zone to midnight and daylight saving time. w Can a person live anywhere without knowing his time zone?

Casio G Sck 5229

Chicago is in the Central Time Zone.