In simple words
In Vedic astrology your life moves through nine long chapters called dashas, always in the same order. Which one you start in depends on your Moon at birth.
The Ketu dasha lasts 7 years. While you are in it, Ketu's themes colour those years. Your chart page in Vedic mode shows which dasha you are in now, with dates.
Themes
A Ketu period lasts seven years and turns attention away from worldly accumulation toward insight. Old attachments may loosen, and you may feel a pull toward spiritual practice, research or simplicity. Change can arrive suddenly, clearing space for what matters most.
What it supports
Meditation, study of deep subjects, healing work, detachment from unhelpful habits and listening to intuition.
What it asks of you
Ketu asks you to release what no longer belongs to you without losing your footing. Stay connected to people and routines that keep you grounded while you explore the inner world.