What Is Ekadashi, and Why Do People Fast on It?

Unlike a festival tied to a fixed occasion, Ekadashi happens on a schedule — twice every lunar month — and for many observant Hindus, it’s one of the most consistent spiritual practices in their calendar, far more frequent than any single annual festival.

What Ekadashi actually is

Ekadashi means “the eleventh” — it refers to the eleventh day of each of the two lunar fortnights (paksha) that make up a Hindu lunar month: Shukla Paksha (the waxing moon) and Krishna Paksha (the waning moon). Because there are two fortnights per month, Ekadashi occurs roughly twice a month, about 24 times a year (occasionally more, depending on how the lunar and solar calendars align in a given year).

Each of these 24-ish Ekadashis has its own name and, often, its own associated story, but the underlying practice — fasting, focused devotion, and abstaining from certain foods and activities — is shared across nearly all of them.

Why it’s tied to Vishnu

Ekadashi is specifically associated with Vishnu, the preserver within the Hindu trinity. Many traditional accounts describe Ekadashi itself as a devi (goddess) born from Vishnu to help defeat a demon, which is why observing this day is considered a way of directly honoring him. This is also why many Ekadashi fasts are paired with reciting the Vishnu Mantra or spending extra time in devotional practice focused on Vishnu specifically, even for people who worship other deities the rest of the month.

Why people fast

The fasting practice varies significantly by tradition and individual — some observe a complete fast without food or water, many eat only certain permitted foods (typically avoiding grains and beans), and some simply avoid specific foods while eating otherwise normally. The common thread across all versions is restraint: the day is meant to reduce the body’s demands so that attention can be redirected toward reflection and devotion rather than toward eating and digestion.

Beyond the physical discipline, Ekadashi fasting is described in tradition as a way of purifying both body and mind, and as an act of devotion in its own right — the restraint itself is treated as a form of worship, not just preparation for it.

A practice built on consistency, not scale

What makes Ekadashi distinct from most festivals is its frequency. A festival like Diwali or Navratri asks for concentrated effort once a year; Ekadashi asks for something smaller but far more regular — roughly twice a month, indefinitely. For many practitioners, this makes it less about a single peak experience and more about building a sustained rhythm of discipline into ordinary life, similar in spirit to the incremental approach described in our guide to starting a daily mantra practice.

If you’re building a regular spiritual practice and want something with a natural, built-in schedule rather than needing to set your own, Ekadashi’s twice-monthly rhythm is one of the oldest templates in the tradition for exactly that.