Question Summary:
What are the times for making qurbani and can we slaughter after maghrib/esha on the first day of qurbani to the last day before ASR?

Question Detail:

What are the times for making qurbani and can we slaughter after maghrib/esha on the first day of qurbani to the last day before ASR?

Answer :

In the name of Allah, Most Gracious, Most Merciful
Assalaamu `alaykum waRahmatullahi Wabarakatoh
The timings for qurbani are from the 10^th of Zil Hajjah until the sunset of 12^th of Zil Hajjah.  The best day for qurbani is the day of Eid al-Adha (10^th of Zil Hajjah), followed by the 11^th and then the 12^th of Zil Hajjah.
It is not permissible to make qurbani prior to Eid Salah. Those residing in villages and farms that are at a distance from the place of Eid Salah may perform the qurbani before Eid.
Qurbani can be made at any time of the day on the 10^th and 11^th of Zil Hajjah. However, it is preferable to do qurbani at day time for the fear of not cutting due to darkness. Qurbani on the 12^th of Zil Hajjah must be made before sunset.  It is not permissible to do it after sunset.
Bahishti Zewar (1/315) Zamzam Publishers
And Allah knows best
Wassalam
Ml. Ehzaz Ajmeri,
Student Darul Iftaa
Concurred by:
Ml. Abu Yahya
Student Darul Iftaa
Darul Iftaa, Madrassah In'aamiyyah