Text message timestamp

This is a nit picky kind of thing, but I have noticed on my phone that if someone texts me and I respond promptly, within the next minute, my text will show up before the person's who texted me first. This occurs after I have exited from the current text log and go back to review it. Most of the people I text are also on AT&T, and their phones (as well as mine) are on automatic time change. Is there any way to correct this? (Besides text slower Haha)