observed since

URI: https://gptkb.org/prop/observed_since
4 triples
GPTKB property
Random triples
Subject Object
gptkb:Zodiacal_light antiquity
gptkb:sumardagurinn_fyrsti gptkb:Viking_Age
gptkb:Central_Time_Zone_(Mexico) 1922
gptkb:National_Foundation_Day_(Gaecheonjeol) 1949 (as a public holiday in South Korea)