Haku khaldin eryga "Gaboow"iyo "Duq" Da' (; ) waa nidaamka jidhka noolaha u koro intii wakhti ah isla markaana u gaboowo. Nooluhu marka uu weynaado ee intii mudo ah joogo wuxuu noqdaa "Duq" taasi oo saynis ahaan u taagan isbedelka ku imanaya jidhka. Marka laga hadlayo dadka, da'da waa isbedelka ku yimaada jidhka qofka intii wakhti ah, taasi oo ugu dambeynta keenaysa isbedel ku yimaada muuqaalka jidhka, fikirka, shaqada, awooda iyo dhaqanka bulsho ee qofkaasi. Da' Gaboow Noole Global AgeWatch Statistics on population ageing and life expectancy HelpAge International and UNFPA (2012). Ageing in the 21st Century – A Celebration and A Challenge. Bowen, Richard L.; Atwood, Craig S. Gerontology. 50 (5): 265–90. PMID 15331856. doi:10.1159/000079125.  Maqan ama ebar |title= (caawin) Maqaalkan waa la bilaabay. Hadii aad wax ka taqaanid fadlan ka caawi Wikipedia in aad Wax ku dartid. Qoraalkaagu ha noqdo mid faa'iido leh oo dhexdhexaad ah.