In luha prayer its minimum Four rakats and maximum Eight rakats
Asr: i) Four rakat sunnat ghair Muakkadah (Optional but spiritually beneficial) ii) Four rakat Fard
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Fajir prayer is very important as is every other prayer.
In Islamic prayer (salah), the number of rakats can vary depending on the time of day and the type of prayer being performed. The stages of rakats generally include standing, bowing (ruku), prostrating (sujood), and sitting. Each rakat consists of a specific sequence of these stages.
This Islamic prayer concludes when the sun rises.
A rakat can be said to be a" round" of prayer. The word denotes " bowing". The bowed down position in prayer is called ruku. You are said to have offered 2 RAKATS of prayer when your prayers have two rukus or bowing down in them. The dawn prayer is of two rakats or rounds . the night prayer consists of four. Hope you are satisfied
Usually two (2) rakats
The time limit of Fajr (dawn) prayer is from the appearance of first sun light at start of sunrise until before the full sunrise.
If the Fajr (or Dawn prayer (The Fajr prayer starts with the rise of "white light" (fajar sadiq) in the east, and lasts until sunrise. ) is considered the first prayer, then the prayer of Isha (around half way between sunset and sunrise) is the last prayer of the day.
Use this link http://www.inter-islam.org/Actions/Part8.html#Namaaz%20Chart
Isha:i) Four rakat sunnat e Ghair Mokadda (Optional but spiritually beneficial)ii) Four rakat Fardiii) Two Rakat Sunnat Mokaddaiv) Two rakat Nafil (Optional but spiritually beneficial)v) Three rakat Wajibvi) Two rakat Nafil (Optional but spiritually beneficial)