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Currently you are able to watch "It's Always Sunny in Philadelphia - Season 1" streaming on Disney Plus or buy it as download on Microsoft Store.
The first season of It's Always Sunny in Philadelphia, premiered on FX on August 4, 2005. The season contains 7 episodes and concluded airing on September 15, 2005.
The JustWatch Daily Streaming Charts are calculated by user activity within the last 24 hours. This includes clicking on a streaming offer, adding a title to a watchlist, and marking a title as 'seen'. This includes data from ~1.3 million movie & TV show fans per day.
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