The Astronomical New Moon is on Thursday 17 September 2020 at 12 noon BST. The crescent will not be visible on this day.
The calculations for crescent visibility on Friday 18 September 2020 for London is as follows:
Sunset 7:09 pm
Crescent age 31 hours 9 minutes
Moon lag time 54 minutes
Crescent altitude 8.12 degrees
Crescent elongation 18.57 degrees
The crescent can be easily seen by naked eye.
1st Safar 1442AH will InshaAllah be on Saturday 19 September 2020 in Europe.