0 if what you name "isha time" is not really isha time start, then it is possible in high latitudes of earth in some time in summer side of year. "isha" time is given in prayer tables for that places but it is not really isha time start as it means for normal places.
Fast is a worship we do for Allah and nobody would like to risk doing it badly or starting it badly, that's why many people keep a safe time zone between adhan and the time tables (as time tables may have an inaccuracy of a few minutes +/-) You may also refer to the chapter on the prayer times in al-Muwatta' for more information.
Those prayer tables use 18° for Fajr, it is recommend to wait 10 to 20 minutes before starting Fajr salaat. Equally, complete sahur (imsak) (pre-dawn meal) 10 to 20 minutes Fajr time when using 15° table. And now finally, to answer your question, no where in the article did the mention of angle less than 9° come up.
Is eating on the same table with non-Muslims (Christians, Jews, Hindus, etc) allowed? The assumption is that you would be eating halal food such as vegetables, and that non-Muslims would eat food w...
So in some countries some of these people rather use their eyes observing the sky than clocks to call for it, while others rely on time tables. As Allah the almighty says: … Indeed, prayer has been decreed upon the believers a decree of specified times. (4:103)
The meaning of PRACTICAL is of, relating to, or manifested in practice or action : not theoretical or ideal. How to use practical in a sentence.