1) November 29
2) December 2
3) December 1
4) November 30
Explanation:
The Day of Remembrance for all Victims of Chemical Warfare is observed annually on November 30 under the resolution (OPCW C-20/DEC.10). The day was officially recognised by the United Nations(UN) at the 20th session of the Conference of the States Parties to the Chemical Weapons Convention (CSPCWC) and has been celebrated since 2005.The day is observed as a tribute to the victims of chemical warfare and also aims to reaffirm its commitment of the Organisation for the Prohibition of Chemical Weapons (OPCW) to eliminate the threat of chemical weapons.