Its not a 2-hour update cycle. The GA hotspots, and similar fire products rely on the TERRA, AQUA and VIIRS satellites that give only up to twice a day coverage (approximately noon and midnight for MODIS sats), and the coverage is not complete on every pass. They're brilliant for spatial resolution, but not temporal - you're lucky if they have covered your area within a few hours ago, and so should *not* be used over RFS/CFA data and advice.
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