Terrain: NASA GIBS Blue Marble with the 2016 Black Marble night-light composite at global zoom. Static reference imagery, not current satellite conditions. NASA source.
Day / night shading is computed from the current UTC time, independently of the static imagery. It is not a weather or operational observation.
Shipping routes: PortWatch reference network, not live AIS tracks or verified port-pair journeys. Provider layer last edited in 2023. Source & acquisition evidence ↗
Raw registry fields—not daily activity. Reporting period and share basis are not established in this stored metadata. Shares are shown without conversion to percentages.
Port activity is daily. Other observations are shown through the end of the selected UTC day. The retrieval cutoff and reference geography stay unchanged. Amber segments mark missing observations.
FreightWeave 