Among the 24 Ekadashis observed each year, two stand above the rest in significance: Devshayani Ekadashi and Dev Uthani Ekadashi. Together they bookend the sacred four-month period called Chaturmas. Here's how they differ.

Devshayani Ekadashi (Ashadha Shukla Ekadashi)

Devshayani Ekadashi falls on the 11th day of the bright fortnight of Ashadha (June–July). On this day, Lord Vishnu is believed to go to sleep on the cosmic ocean of Ksheer Sagar, resting on the serpent Ananta Shesha.

Key significance:

• Marks the beginning of Chaturmas — the four holy months during which auspicious events like marriages and new ventures are traditionally avoided
• Also known as Hari Shayani Ekadashi or Padma Ekadashi
• Devotees take sankalpa (vow) of restraint for the Chaturmas period
• In 2026, Devshayani Ekadashi falls on July 7, 2026

Dev Uthani Ekadashi (Kartik Shukla Ekadashi)

Dev Uthani Ekadashi falls on the 11th day of the bright fortnight of Kartik (October–November). Lord Vishnu is believed to awaken from his cosmic sleep on this day.

Key significance:

• Marks the end of Chaturmas — auspicious activities, especially weddings, resume from this day
• Also known as Prabodhini Ekadashi or Tulsi Ekadashi
• Tulsi Vivah is performed on this day or the following day — the ceremonial marriage of Tulsi (holy basil) to Lord Vishnu/Shaligram
• The marriage season in Hindu tradition officially begins with this Ekadashi
• In 2026, Dev Uthani Ekadashi falls on November 1, 2026

Key Differences at a Glance

• Devshayani: Vishnu sleeps → Chaturmas begins → no weddings
• Dev Uthani: Vishnu wakes → Chaturmas ends → weddings begin
• The gap between them is exactly four lunar months

Why Are Both Ekadashis Special?

Both are considered Maha Ekadashi — among the most potent fasting days of the year. Fasting on either day is said to grant the merit of observing all 24 annual Ekadashis. Vishnu temples see their largest gatherings on these two dates each year.