The ceasefire does not apply to Daesh jihadist group or other designated terrorist organizations, including al-Nusra Front.
"The HNC confirms the acceptance among the Free Syrian Army and the armed opposition to adhere to a temporary truce starting at midnight on February 27 for the duration of two weeks," the HNC said in a statement.
The agreement was reached after "negotiations with 97 opposition groups," the committee said, without naming the exact rebel forces.
Earlier this week, Russian Deputy Foreign Minister Gennady Gatilov told RIA Novosti that Russia and the United States were in talks over the preparation of the draft UN Security Council resolution. The draft will reportedly be put up for a vote on Friday.
On Monday, the United States and Russia, the co-chairs of the International Syria Support Group (ISSG), announced a plan for a ceasefire between the warring parties in Syria to go into effect on Saturday, February 27. The agreement has been approved by the other 17 members of the ISSG.
Syria has been in a state of civil war since 2011, with the army loyal to President Bashar Assad fighting several opposition factions and militant organizations, including Daesh terrorist group, which is banned in a number of countries, including Russia and the United States.
