Find the Time Zone of Your Birthplace
If you were born in the boundary of Chinese astrological year, month, day or hour, You need to find the time zone of your birth place to build correct Chinese astrology birth chart.
World Time Zone Map provided by U.S. Naval Observatory at https://www.usno.navy.mil/USNO/astronomical-applications/images_aa/TimeZoneMap0210.png/image_view_fullscreen
If your city is in Zone T, then the time zone is -7.