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Japan's standard meridian is 135 degrees east longitude.
Literal
Japan [possessive-の] meridian [topic-は] east-longitude 135 degrees [copula-です].
子午線 (しごせん, 'meridian') is the geography term — 子 ('rat'/north) + 午 ('horse'/south) + 線 ('line'), from the Chinese zodiac compass. 東経 (とうけい, 'east longitude'). The meridian at 135°E passes through Akashi, Hyogo Prefecture, which is Japan's time-standard city. A factual geography sentence with specialized vocabulary.