In the Eastern time zone, occultation begins just after sunrise. So, you'll probably need a telescope to get a look. In the Central time zone, it starts about 30 minutes before dawn. You'll get to see Mars go behind the moon, but the end of occultation will happen after sunrise. For residents of the Mountain time zone, the event will take place near the horizon between moonrise and sunrise. You're fortunate enough to see both the start and end of the event in the dark.
Most of the west coast will only be able to catch the end of occultation as Mars reappears from behind the moon. Though, that's not true further south in the Pacific time zone. Find a clear view of the horizon in the southeast sky to catch it.
The timing in each time zone will change slightly for each city. Though, EarthSky provides the expected timing for a few cities. New York City's occultation begins 7:36am and has Mars reappearing at 9:05am (sunrise is at 6:47). In Omaha, the timing is expected to be 5:52am to 7:18am. Denver's occultation starts at 4:41am and has the Red Planet returning at 6:02am. In Los Angeles, that span is 3:38am to 4:29am.
Space.com notes that the moon often makes stars disappear, but the relative brightness of Mars to our eyes on Earth will allow the event to take place a little more slowly. It'll take about 15 seconds for Mars to disappear and appear once its edge makes contact with the moon. It's not something that requires you to sit outside for hours, and it's close enough to work hours that it's going to be quite easy to get the bragging rights for how you maximized your three-day weekend.