The special day will be celebrated Sept. 30 as Vanessa Guillen Day.
Guillen graduated from HISD's César E. Chávez High School in 2018 before serving in the Army.
SEE RELATED STORY: Timeline offers look at tragedy and legacy of Ft. Hood soldier
Her murder earlier this year at Fort Hood focused a national spotlight on the treatment of women in the military.
Since her death, Congress has also vowed to do more, saying it will launch an investigation into sexual assault, disappearances, deaths and the leadership's response at Fort Hood after 28 soldiers stationed at the U.S. Army base in Texas died this year.
SEE RELATED: What led to 28 soldiers' deaths from 1 Army base? Congress wants to know
A two-hour special showing you what ABC News uncovered about her murder is scheduled to air Friday at 8 p.m.