So I am a Muslim, I use the Hanafi fiqh (so does the rest of my family), and I use ‘Islamic University of Sciences, Karachi’ as my calculation method (because it matches with Abu Hanifa’s opinion), but my parents actually use ISNA. They say my prayer times are wrong (they just don’t get the calculation methods, that’s all), so I am thinking of using ISNA like them. Is it appropriate for me to use ISNA if I use Hanafi sources? Also, what if they ask me to go to the masjid with them, on Shafi’i Asr, as they don’t get the opinions of the Imams. Should I go with them? In short:
Can I switch my calculation method from IUSK to ISNA so a unity in prayer time happens with my family?
Can I go with them to the Shafi’i, Maliki, Hanbali Asr if they force me to?