Q: If someone embraces Islām during the daylight hours of Ramadān, are they obliged to fast the remainder of the day?
A: If someone were to embrace Islam, regain mental faculty, or conclude their menstrual cycle or postpartum bleeding during the daylight hours they are obliged to fast the remainder of the day and then make it up later.
Source: Sharh al-Muntaha
Q: Is it permissible to fast on the days of Tashriq especially if it is a day that I normally fast such as a Monday, Thursday, or the "white days" etc.? A: Fasting, be it voluntary or obligatory e.g.
Q: Is it permissible to make up missed days of Ramadan during the 10 days of Dhul-Hijjah or the first 10 days of al-Muharram? What about Ashura, etc.? A: The 10 days of Dhul-Hijjah are days of worship
Q: What is the ruling of fasting the entire month of Sha’ban? A: There are numerous ḥadīth that demonstrate the virtue of abundant fasting in the month of Sha’ban. Fasting the month, in its entirety,