user: Question: On what date was the catalog SCYL-934,623 for Australia?
Columns: ['Region', 'Date', 'Label', 'Format', 'Catalog']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['United Kingdom', '7 April 1972', 'Chrysalis Records', 'stereo LP', 'CHR 1006']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Catalog" = 'SCYL-934,623' AND "Region" = 'Australia';