Siku ya kimataifa ya lugha ya alama (kwa Kiingereza International Day of Sign Languages - IDSL) husherehekewa tarehe 23 Septemba kila mwaka ikiambatana na wiki ya viziwi duniani. Kuachaguliwa kwa tarehe 23 Septemba kunaendana moja kwa moja na tarehe ya kuanzishwa kwa shirikisho la wasiosikia duniani World Federation of the Deaf lililoanzishwa mwaka 1951. 2019: Lugha ya Alama Haki kwa Wote! United Nations declared 23 September as International Day of Sign Languages - WFD. WFD. Third Committee Approves 16 Drafts with Friction Exposed in Contentious Votes on Glorification of Nazism, Cultural Diversity, Right to Development ! Meetings Coverage and Press Releases. UN. Announcement: Sub-themes of the International Week of the Deaf - WFD. WFD.