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Secondary progressions reveal how your personality evolves over your lifetime. Using the principle of "a day for a year," each day after birth maps to a year of life, showing the slow unfolding of your inner self.
Deluxe Astrology's Progressed Chart calculator uses the secondary progression method — where each day after birth equals one year of life — to show how your natal planets have evolved, including your progressed Sun sign change and progressed Moon phase cycle.
Secondary progressions are the most widely used progressed chart technique in Western astrology. The method works by taking one day of ephemeris time after your birth and treating it as one year of your life: day 1 after birth = year 1, day 30 = age 30, and so on. Your progressed Sun changes signs approximately every 30 years, marking a profound shift in identity and life direction. Your progressed Moon completes its full cycle in about 27.3 years, with each sign transit lasting roughly 2.5 years and reflecting shifting emotional focuses. Watching when the progressed Moon changes signs — or when it crosses your natal chart angles — marks the most personally felt turning points in daily life.
Reviewed by Ravi Khorana
Co-Founder, Deluxe Astrology. Vedic astrologer with expertise in Jyotish, Nakshatras, and Dasha systems.