Panchak is a combination of five Nakshatras in Hindu month: Dhanista, Shatabhisha, Purva bhadrapada, Uttara bhadrapada & Revathi Nakshatras. In May 2015, Panchak begins on May 11 and ends on May 16.
In May 2015, Panchak starts at 10.18 PM on 11 May and ends on 4.41 AM on 16 May.
May 11, 2014 – Dhanishta Nakshatra
May 12 – Dhanishta Nakshatra
May 13 – Shattarka Nakshatra
May 14 – Purva Bhadrapada Nakshatra / Uttara Bhadrapada Nakshatra
May 15 – Revati Nakshatram
Panchak May 2015 coincides with Ashtami, Navami, Dashami, Ekadashi and Dwadashi tithis in Krishna Paksha of Jyeshta Month in North Indian calendars and in Vaishakh Month as per Amavasyant calendars followed in Maharashtra, Gujarat, Karnataka & Andhra Pradesh.