The Astronomical New Moon is on Sunday 15 November 2020 at 5.07am. The crescent will not be visible on this day.
The calculations for crescent visibility on Monday 26 November 2020 for London is as follows:
Crescent age 35 hours 4 minutes
Moon lag time 59 minutes
Crescent altitude 6.29 degrees
Crescent elongation 20.25 degrees
The crescent can be easily seen by naked eye.
1st Rabi ul Aakher 1442AH will inshaAllah be on Tuesday 17 November 2020 in United Kingdom and Europe. For Northern Europe, 1st Rabi ul Aakher will inshaAllah be on Wednesday 18 November 2020.