Gandhiji issued a call to the nation to observe 'Hartal' against the Rowlatt Act which was also known as Black Act, on April 6 1919.
GREAT POPULAR DEMONSTRATION AGAINST THE BLACK ACT
The following is the programme of the demonstrations which
have been arranged for Sunday next:
SUNDAY, 6TH APRIL, 1919
SEA BATH 7 A.M.—8 A.M. CHOWPATTY
PROCESSION 8.15—10 A.M.:
Chowpatty Sea Face Girgaum Back Road
Sandhurst Bridge C. P. Tank Road
Sandhurst Road Madhav Baug
Mrs. Jayakar Presiding.
Mrs. Sarojini Naidu, Mahatma Gandhi: Speakers,
6.30—MASS MEETING—FRENCH BRIDGE
IF YOU VALUE YOUR FREEDOM, YOU WILL JOIN
The Bombay Chronicle, 4-4-1919
CWMG Vol 15:177