There was another successful SpaceX Starlink launch. There are now 478 version 1.0 satellites and about 60 version 0.9 satellites.
420 satellites are needed for minor broadband coverage of Earth. 780 of the first ~1600 for moderate coverage.
There are STarlink launches scheduled for:
If there are two Starlink launches each of the remaining months, then at the end of September, 2020, the Starlink constellation would reach moderate coverage of the Earth.
It would be about mid-2021 when 1600 Starlinks would provide phase 1 service.
SOURCES- SpaceX, Wikipedia
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