YorkHilal 2018 10 10cThe first day’s youngest crescent moon (Hilal) appears from different places on the earth each month, moving from east to west, as well as from south to north. Looking at the predicted crescent visibility maps for a whole year, it can be seen that from the start of 1439 AH the first day's Hilal appears on the northern hemisphere in majority of months.

When the moon is in the northern hemisphere, it is possible to sight the Hilal from the UK horizon, if people make an effort to sight it (weather permitting). However, it should be noted that the lunar year has approximately 6 months that are 29-days and 6-months that are 30-days (in different combinations), which means we should not expect to sight the Hilal on every 29th day!

The predicted date in 1441 AH (2019 - 2020)  when the moon is expected to be sighted on the UK horizon are given below, which may be 29th or the next day (i.e. 30th or 1st lunar date in the UK to Morocco region):

Observation Dates (for month) Observation Dates (for month)
29/09/2019 - may need binoculars
28/11/2019 - a day after Morocco
25/02/2020 - a day after Morocco
24/05/2020 - a day after Morocco
21/07/2020 - may need binoculars
*Astronomy Challenge: spot the Dhul Hijjah Hilal in the UK on 21 July 2020 using binoculars/telescopes (Yallop Code B/C)

To make a successful sighting of the Hilal (even if cloudy), it is necessary to plan the observation effectively with the following considerations in mind:

  1. Identify a high location where the western horizon can be easily seen (down to ground/sea level)
  2. Make a note of the sunset position on a clear day with respect to the landscape a few days earlier
  3. Use the Internet or Mobile Phone Apps to note the sunset and moonset times for the location
  4. On the above dates, look for the Hilal close to the sunset position between the above setting times
  5. Try to use a suitable Mobile Phone App (eg. GPS Compass) to find the direction in cloudy weather

After your observation submit your result on our website (positive or negative), so it can be taken into consideration by the UK Ulama when making a decision for the start of the new month, InshaAllah.

YorkSunset 2018 10 31 how toSee a short time-lapse video of sunset position: https://www.youtube.com/watch?v=U_Y2T15OE8U

Please feel free to share this page and see also: A Handy Guide to Measuring the Sky

Related: Importance of Moon Sighting | First day's moon on UK horizon | Links

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