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Solar Bulletin - Volume 72, Number 12

The December Solar Bulletin (Vol. 72, No. 12) is now available at https://www.aavso.org/solar-bulletin

The Sudden Ionispheric Disturbance (SID) Report for December is now available here: https://www.aavso.org/sid-database

AAVSO 49 Bay State Rd. Cambridge, MA 02138 aavso@aavso.org 617-354-0484