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How old are you in your 6th decade? Decoding a Decade of Life

According to the *Britannica Dictionary*, a quinquagenarian is a person between the ages of 50 and 59. If you're wondering how old are you in your 6th decade, this means that your 6th decade is the period of your life encompassing your 50s, starting on your 50th birthday and ending on your 60th.