All you need to know about lunar visibility

The best lunar visibility chart. [12 months] 1441 AH
https://www.staff.science.uu.nl/~gent0113/islam/1441/1441g.pdf

this chart till 1450 AH, important Islamic days. I page
https://www.staff.science.uu.nl/~gent0113/islam/ummalqura_principal.htm

Now this chart, when members of Mufti Popalzai go crazy, and then -announcement of the Supreme Court of Saudi Arabia, Adjustment time ya habibi ! 1 page
https://www.staff.science.uu.nl/~gent0113/islam/ummalqura_adjust.htm

This is a master index till 1450 AH plus Turkish calendar.
https://www.staff.science.uu.nl/~gent0113/islam/

This one gives you information about your city
https://www.timeanddate.com/moon/phases/

https://www.moongiant.com/phase/today/
https://www.moongiant.com/calendar/April/2020

other site
moonsighting.com