Rau ntau daim ntawv thov kev kos duab, lub sijhawm meej meej ntawm thaum cov duab tau txais yuav muaj txiaj ntsig.Timestamps muab los ntawm cov duab software tsis yog ib txwm meej heev vim tias lawv tuaj yeem suav nrog qeeb vim kev sib kis, khaws cia hauv RAM thiab ua cov duab los ntawm lub khoos phis tawj thiab software, tshwj xeeb tshaj yog nyob rau tus nqi siab.Qee lub koob yees duab txhawb lub sijhawm kho vajtse tsim los ntawm lub koob yees duab cov khoom siv hluav taws xob, tso cai rau lub sijhawm duab meej dua.Yog tias nkag siab lub sijhawm ntawm cov duab yog qhov tseem ceeb rau koj daim ntawv thov kev yees duab, lub koob yees duab uas txhawb nqa hardware timestamps raug pom zoo.