Ramadan is the month God decreed for fasting. It is the 9th month of the lunar calendar. The full details of fasting are given in Quran 2:183-187.
O you who believe, fasting is decreed
for you, as it was decreed for those before you, that you
may attain salvation. (2:183)
Ramadan is the month during which the Quran was revealed, providing guidance for the people, clear teachings, and the statute book. Those of you who witness this month shall fast therein.... (2:185)
The new moon timings to determine the month of Ramadan are as follows:
26 May 2017 - 23 June 2017: God willing the first day of Ramadan is May 26, and the last day of Ramadan is June 23 for Western parts of USA and Canada (e.g., Los Angeles, San Francisco, Seattle, Vancouver, Phoenix, Tucson). Please check with the information available for your location using the Ramadan Calculation Assistant and the US Naval Observatory solar & lunar data.
26 May 2017 - 24 June 2017: God willing the first day of Ramadan is May 26, and the last day of Ramadan is June 24 for central USA & Canada (e.g., Chicago, Dallas, Miami New York, Washington DC, Ottawa, Toronto), South America. A few areas in west Europe (e.g., London, Lisbon) also may fall into this data span. Please check with the information available for your location using the Ramadan Calculation Assistant and the US Naval Observatory solar & lunar data.
27 May 2017 - 24 June 2017: God willing the first day of Ramadan is May 27, and the last day of Ramadan is June 24 for most of Europe (e.g., Paris, Berlin, Rome, Moscow), Africa, Asia, Australia, New Zealand. Please check with the information available for your location using the Ramadan Calculation Assistant and the US Naval Observatory solar & lunar data (moon phase calculator).
The Night of Destiny (Night of Power) will start, God willing, at sunset on June 20, 2017 for those places that start fasting May 26th. For those locations that start Ramadan on May 27th (a day later), the Night of Destiny falls on June 21st, 2017 God willing.
Please check your local sunset times to verify these dates. You will also need to convert the new moon times from UTC (GMT) to your local time zone (taking into account daylight savings if applicable).
The end date may also vary based on your location, so please verify using the information in the next paragraph.
If you have any questions for calculating the start and end days of Ramadan, please refer to September 2009 issue of the Submitters Perspective. Dates and times of Moon phases and sunrise/sunset can be found from: US Naval Observatory . We also have for your convenience (please verify computed results for accuracy) a Ramadan Dates Calculator.
More details on Ramadan including information about why the calculation is done as above (i.e., the beginning of the day is at sunset) is available in an article on Ramadan. Other Ramadan articles are linked at the top of this page.
Phases of the moon data (including the new moon) for the current year and beyond and up are available at the US Naval Observatory. All times are in UT (Universal Time / GMT). To convert to your time zone you can use the Time Zone Converter.
* For your specific location you can visit the USNO
Sun/Moon daily data page. Calculate the information for
the date you are interested. Compare the time of sunset with the time for the new moon (in local time).