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The lineup occurs once every 175 years. The launch window the last time this alignment occurred was from 1976 to 1980, so the next time it would open would be 2151-2154.

Source: Grand Tour program

The lineup occurs once every 175 years. The launch window the last time this alignment occurred was from 1976 to 1980, so the next time it would open would be 2151-2154.

The lineup occurs once every 175 years. The launch window the last time this alignment occurred was from 1976 to 1980, so the next time it would open would be 2151-2154.

Source: Grand Tour program

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The lineup occurs once every 175 years. The launch window the last time this alignment occurred was from 1976 to 1980, so the next time it would open would be 2151-2154.