You asked:

when do the clocks go back in the usa

the United States
the United States

The clocks go back in the United States at 1:01 a.m. HADT on November 5th 2017, midnight PDT on November 5th 2017, midnight MST on November 5th 2017, 10:00 p.m. HADT on November 4th 2017, 9:00 p.m. HAST on November 4th 2017, 1:00 a.m. MDT on November 5th 2017, 5:01 a.m. CDT on November 5th 2017, 3:01 a.m. PDT on November 5th 2017, 3:01 a.m. MST on November 5th 2017, 2:00 a.m. CDT on November 5th 2017, 12:01 a.m. HAST on November 5th 2017, 4:01 a.m. MDT on November 5th 2017, 1:00 a.m. CDT on November 5th 2017, 11:00 p.m. PDT on November 4th 2017, 11:00 p.m. MST on November 4th 2017, 9:00 p.m. HADT on November 4th 2017, 8:00 p.m. HAST on November 4th 2017, midnight MDT on November 5th 2017, 11:00 p.m. HADT on November 4th 2017, 5:00 a.m. MDT on November 5th 2017, 4:00 a.m. MST on November 5th 2017, 4:00 a.m. PDT on November 5th 2017, 1:00 a.m. HAST on November 5th 2017, 6:00 a.m. CDT on November 5th 2017, 3:00 a.m. CDT on November 5th 2017, 1:00 a.m. PDT on November 5th 2017, 1:00 a.m. MST on November 5th 2017, 2:00 a.m. HADT on November 5th 2017, 10:00 p.m. HAST on November 4th 2017, 2:00 a.m. MDT on November 5th 2017, 4:00 a.m. CDT on November 5th 2017, 2:00 a.m. PDT on November 5th 2017, 2:00 a.m. MST on November 5th 2017, midnight HADT on November 5th 2017, 11:00 p.m. HAST on November 4th 2017 and 3:00 a.m. MDT on November 5th 2017.