The Layers panel controls more than you might turn on by default

The Live Data Layers panel lets you toggle each overlay independently:
Lightning Strikes, Wildfire Hotspots, GOES Cloud Cover, NEXRAD Radar,
NWS Watches & Warnings, Tropical Storms & Hurricanes, Timezone
Boundaries, City Clocks, and ISS Ground Track. Most of these are off by
default to keep the map readable – if you’ve only ever seen the
default view, it’s worth turning a few on to see what’s actually
available. City Clocks in particular is easy to miss if you’re not
looking for it.