April 17 traditionally marks Independence Day in Syria, commemorating the last withdrawal of French troops in 1946, but 34 years later UN monitors are trying to ensure a fragile ceasefire between the government and the opposition.
It is the second day of the UN mission, ahead of a larger delegation of 250 monitors expected to be approved after a second resolution by the UN Security Council.
However, there are still safety worries as the monitors are unarmed and there continue to be reports of violence.
Activists claimed 23 people were killed in government attacks all over the country on Monday. Troubled areas include Homs, Deraa, Hama and the northern province of Idlib.
The government said violence is being provoked by armed terrorists.