{"category":null,"date":{"calendar":null,"day":7,"day_url":"https://kogda.com/7-sentyabrya","month":9,"text":"7 сентября 1947 года","year":1947,"year_url":"https://kogda.com/1947"},"id":151689,"kind":"event","license":"Тексты: Русская Википедия, CC BY-SA 4.0. Люди и места: Wikidata, CC0.","mentions":[],"people":[],"places":[{"name":"Московский метрополитен","slug":"moskovskij-metropoliten","url":"https://kogda.com/place/moskovskij-metropoliten"}],"related":[],"slug":"v-moskovskom-metropolitene-vpervye-v-sssr-primeneny-1947","source":{"license":"CC BY-SA 4.0","name":"Русская Википедия","url":"https://ru.wikipedia.org/wiki/7_сентября"},"summary":null,"text":"","title":"В московском метрополитене впервые в СССР применены интервальные часы на станциях","url":"https://kogda.com/e/v-moskovskom-metropolitene-vpervye-v-sssr-primeneny-1947","weight":21}