GMT is -5 hours ahead of us during Daylight Savings Time and -6 hours during standard time.
So if it is 12PM in Greenwich then it would be 5 hours earlier or 7am in Dallas.
<span> Although the skyrocketing urban populations strained public school systems, schools educated everyone from the children of urban professionals to the children of immigrant workers and the very poor. Some cities, including Boston, New York, Chicago, and San Francisco, even provided free secondary schools.</span>