If you are sure that you prayed five Rak'ats, then you must repeat the Prayer, but if you have doubt, after you have completed the prayer, then this doubt has no value and your prayer is valid.
The end of the time for Maghrib and 'Isha is the middle of the night in the case of the delay being voluntary.
Middle of the night here means the middle between ghurub of the sun and Fajr time. This means it would depend on location and time of the year.
If the delay is not voluntary, and one has an excuse, like ending menstrual cycle after the middle of the night, or sleeping, or unconscious, then the time would extend until before Fajr.
the sunset (Maghrib time) marks the beginning of the new twenty-four-hour period (Yawm) or "day". For example, at Maghrib of Thursday starts the night of Friday (Laylat al-Jumu'ah) and at Fajr time of the night of Friday starts the daytime of Friday (Nahar al-Jumu'ah) and it lasts until the next Maghrib. The same goes for all the others days.
Thank you for your question. According to the school of Ahl al-Bayt (as) there is no problem with combining the zuhr and asr prayers in that sequence (one prayer immediately after the other or with any time gap between) after the time of zuhr has set in without any specific reason. Similarly there is no problem with combining magrib and isha prayers after the time of magrib. So there is no problem praying isha prayer after magrib prayer and before 7pm.
OTP entered does not match. Please enter the correct OTP!
Full Name and Password are required.
Please provide a valid Email address.
Please enter a valid email address.
Enter valid first name and last name with at least one space.
Mail sent successfully!
A validation e-mail has been sent to your e-mail address. You will need to follow the instructions in that message in order to gain full access to the site.