Panchak is a combination of five Nakshatras in Hindu month: Dhanista Nakshatra, Shatabhisha Nakshatra, Purvabhadra Nakshatram, Uttarabhadra Nakshatra & Revathi Nakshatrams.
In December 2019, Panchak begins on December 3 and ends on December 8. And there is second Panchak which begins on 30 December and ends on 4th January 2020.
In December 2019, Panchak starts at 1 AM on December 3 and ends at 1.31 AM on December 8.
December 3, 2019: Dhanishta Nakshatra
December 4, 2019: Shatabhisha Nakshatra
December 5, 2019: Purva Bhadrapada Nakshatra
December 6, 2019: Uttara Bhadrapada nakshatra
December 7, 2019: Revati Nakshatram
Panchak December 2019 coincides with Saptami, Ashtami, Navami, Dashami and Ekadashi tithis in Shukla Paksha of Margashirsha Month in North Indian calendars and in Amavasyant calendars followed in Maharashtra, Gujarat, Karnataka & Andhra Pradesh.
And there is another Panchak in December 2019 which begins on 30 December. It begins at 9.36 AM on 30th and ends on 4th January 2020 at 10.06 AM.
December 30, 2019: Dhanishta Nakshatra
December 31, 2019: Shatabhisha Nakshatra
January 1, 2020: Purva Bhadrapada Nakshatra
January 2, 2020: Uttara Bhadrapada nakshatra
January 3, 2020: Revati Nakshatram