In the main event, Johnson will look to make the seventh defense of his title. He and Dodson fought in January 2013.Johnson won a unanimous decision.

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In the co-feature pits former heavyweight champions Andrei Arlovski and Frank Mir.

Here’s everything you need to know about UFC 191.

What time is UFC 191: Johnson vs. Dodson taking place?

The preliminary card begins at 7 p.m. ET, the main card at 10 p.m. ET. Johnson and Dodson are expected to enter the octagon about 12:15 a.m. ET.

What TV channel is showing UFC 191: Johnson vs. Dodson?

You can watch the preliminary card on Fox Sports 1 at 8 p.m. ET and then on pay-per-view at 10 p.m. ET.

Where can I watch UFC 191: Johnson vs. Dodson online?

The first two preliminary fights will be on UFC Fight Pass at 7 p.m. ET. Then use the Fox Sports Go app at 8. The main card begins on UFC.TV at 10 p.m. ET.

Who else is fighting at UFC 191: Johnson vs. Dodson?

MAIN CARD — Demetrious Johnson vs. John Dodson for flyweight title — Andrei Arlovski vs. Frank Mir (heavyweights) — Anthony Johnson vs. Jimi Manuwa (light heavyweights) — Corey Anderson vs. Jan Blachowicz (light heavyweights) — Alex Chambers vs. Paige VanZant (women’s strawweights)

PRELIMINARY CARD — Paul Felder vs. Ross Pearson (lightweights) — John Lineker vs. Francisco Rivera (bantamweights) — Jessica Andrade vs. Raquel Pennington (women’s bantamweights) — Clay Collard vs. Tiago Trator (featherweights) — Joe Riggs vs. Ron Stallings (middleweights) — Nazareno Malegarie vs. Joaquim Silva (lightweights)

Steven Muehlhausen is a boxing and MMA writer and contributor for Sporting News. You can email him at [email protected] and can find him on Twitter @SMuehlhausenMMA.