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VIIRS fires are represented as tiny triangles whereas tiny dots are used for MODIS fires. The first image above shows VIIRS fires + corrected reflectance with true color bands; the second, VIIRS fires + corrected reflectance with M11-I2-I1 bands to show burned areas (reddish brown) and through the smoke.
One of the most visually striking differences between VIIRS and MODIS is that VIIRS has a wider swath which provides full coverage of the globe on a daily basis. Here is a toggle between Aqua/MODIS and S-NPP/VIIRS from December 7, 2015.
Corrected Reflectance layers are also available in north and south polar stereographic projections. Don't mind the giant area of darkness at the north pole during this time of year! Due to the lack of winter sunlight during satellite overpasses, daytime imagery cannot be collected near the pole.
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