"The moon of Ramadan will be born on Tuesday, June 16, 2015 at 14:05 GMT (17:05 pm Makkah time)," the Dublin-based council said in an Arabic statement.
Accordingly, it would be impossible to see the moon before sundown on Wednesday, June 17, either with naked eye or modern sets.
"Thus Thursday, June 18, will be the first day of Ramadan."
The Islamic Society of North America (ISNA) also said that Ramadan would begin on Thursday, June 18, in North America.
In Ramadan, adult Muslims, save the sick and those traveling, abstain from food, drink, smoking and sex between dawn and sunset.
Muslims dedicate their time during the holy month to become closer to Allah through prayer, self-restraint and good deeds.
It is customary for Muslims to spend part of the days during Ramadan studying the Noble Quran.
Source: OnIslam.net