Babban taron kan ma'auni da ma'auni ya yanke shawarar dakatar da aiki tare na lokaci-lokaci na agogon atomic na duniya tare da lokacin nazarin taurarin duniya, aƙalla farawa daga 2035. Saboda rashin daidaituwar jujjuyawar duniya, agogon falaki sun dan kadan a bayan wadanda ake magana da su, kuma don daidaita daidai lokacin, tun daga shekarar 1972, ana dakatar da agogon atomic na dakika daya a duk wasu shekaru, da zaran bambancin dake tsakanin nassosi da ilmin taurari. lokacin ya kai daƙiƙa 0.9 (irin wannan daidaitawa na ƙarshe shine shekaru 8 baya). Daga 2035, aiki tare zai ƙare kuma bambanci tsakanin Coordinated Universal Time (UTC) da lokacin astronomical (UT1, ma'anar lokacin rana) zai taru.
Tun daga shekara ta 2005 ne dai aka tattauna batun kawo karshen karin na biyun a ofishin kula da ma'aunin nauyi na kasa da kasa, amma a kullum ana jinkirin yanke shawarar. A cikin dogon lokaci, jujjuyawar motsi na duniya a hankali yana raguwa saboda tasirin tasirin hasken wata da kuma tazarar da ke tsakanin aiki tare yana raguwa cikin lokaci, misali, idan aka ci gaba da ci gaba bayan shekaru 2000, sabon sakan zai zama dole. kara kowane wata. A lokaci guda, ƙetare a cikin ma'auni na jujjuyawar duniya bazuwar yanayi ne kuma a cikin 'yan shekarun da suka gabata abubuwan da suka faru sun canza kuma tambaya ta taso game da buƙatar kada a ƙara, amma don cire karin na biyu.
A matsayin madadin aiki tare na biyu da na biyu, ana la'akari da yuwuwar aiki tare lokacin da canje-canje suka taru na minti 1 ko 1, wanda zai buƙaci gyare-gyaren lokaci kowane ƴan ƙarni. An shirya yanke shawara ta ƙarshe akan hanyar ƙarin aiki tare kafin 2026.
Shawarar dakatar da aiki tare na biyu da na biyu ya faru ne saboda gazawa da yawa a cikin tsarin software saboda gaskiyar cewa yayin aiki tare, daƙiƙa 61 sun bayyana a cikin ɗayan mintuna. A cikin 2012, irin wannan aiki tare ya haifar da gazawa mai yawa a cikin tsarin uwar garken da aka saita don daidaita daidai lokacin ta amfani da yarjejeniyar NTP. Saboda gazawarsu don ɗaukar bayyanar ƙarin na biyu, wasu tsarin sun shiga madaukai kuma sun fara cinye albarkatun CPU marasa amfani. A aiki tare na gaba, wanda ya faru a cikin 2015, zai zama kamar an yi la'akari da abubuwan da suka faru a baya, amma a cikin Linux kernel, yayin gwaje-gwaje na farko, an sami kuskure (gyara kafin aiki tare), wanda ya haifar da aiki na wasu. masu ƙidayar lokaci daƙiƙa guda kafin jadawalin.
Tun da yawancin sabar NTP na jama'a suna ci gaba da ba da ƙarin na biyu kamar yadda yake, ba tare da ɓata shi cikin jerin tazara ba, kowane aiki tare da agogon tunani ana ɗaukarsa azaman gaggawa mara tsinkaya, wanda zai iya haifar da matsalolin da ba za a iya faɗi ba (a cikin lokaci tun daga ƙarshe. aiki tare, suna da lokaci don manta game da matsalar da aiwatar da lambar , wanda baya la'akari da fasalin da ake la'akari). Matsaloli kuma suna tasowa a tsarin kuɗi da masana'antu waɗanda ke buƙatar sahihancin sa ido kan hanyoyin aiki. Yana da kyau a lura cewa kurakurai masu alaƙa da ƙarin fitowar na biyu ba kawai lokacin aiki tare ba, har ma a wasu lokuta, alal misali, kuskure a cikin lambar don daidaita bayyanar ƙarin na biyu a cikin GPSD ya haifar da canjin lokaci na makonni 2021 a cikin. Oktoba 1024. Yana da wuya a yi tunanin abin da anomalies zai iya haifar da rashin ƙarawa, amma rage dakika.
Abin sha'awa, dakatar da aiki tare yana da ƙasa da ƙasa wanda zai iya rinjayar aikin tsarin da aka tsara don samun agogon UTC da UT1 iri ɗaya. Matsaloli na iya tasowa a cikin ilmin taurari (misali, lokacin kafa na'urorin hangen nesa) da tsarin tauraron dan adam. Alal misali, wakilan Rasha sun kada kuri'ar kin amincewa da dakatar da aiki tare a shekarar 2035, wadanda suka ba da shawarar canjawa dakatarwar zuwa shekarar 2040, tun da sauyin na bukatar gagarumin sake yin aiki da kayayyakin more rayuwa na tsarin kewayawa tauraron dan adam na GLONASS. An tsara tsarin GLONASS da farko don haɗawa da sakan tsalle, yayin da GPS, BeiDou da Galileo suka yi watsi da su kawai.
source: budenet.ru