Muslim Space follows the Fiqh Council of North America in determining dates of the Islamic calendar. They have issued the following information with regards to Ramadan 1444/2023.

Ramadan 1444 AH:
The Astronomical New Moon is on Thursday, March 23, 2023. On that day, everywhere in North and South America at sunset the elongation is at least 8 degrees and moon is at least 5 degrees above the sun. Therefore, first day of Ramadan 1444 is on Friday, March 24, 2023, insha'Allah.

Eidul-Fitr 1444 AH:
The Astronomical New Moon is on Friday, April 21, 2022. On that day there is no place on earth where at sunset the elongation is 8 degrees and moon is 5 degrees above the sun. Therefore Shawwal 1444 cannot start the next day. Hence first day of Shawwal is on Saturday, April 22, 2023, insha'Allah.