Hinduism religion death is not treated as the end of life. Instead, in Hinduism the moment the ‘Atma’ or ‘soul’ leaves the present body commences its journey. This could be for reincarnation in a new form or its journey for ‘Moksha’ [final liberation].
Panchak dates are based upon astrological calculations. When a person passes on the first thing, you should check the time deceased passed on. Panchak is very bad time for a person to die in. Panchak is combination of five Nakshatras [stars]. These include Dhanishtaa, Shatabhisha, Poorva Bhaadrapada, Uttara Bhaadrapada and Revati.