The Astronomical New Moon is on Saturday 28 September 2019 at 7.26pm. The crescent cannot be seen on this day.
The calculations for crescent visibility on Sunday 29 September 2019 for London are as follows
Sunset 6.45 pm
Crescent age 23 hours 19 minutes
Moon lag time 49 minutes
Crescent altitude 7.19 degrees
Crescent elongation 14.37 degrees
The crescent can be seen with naked eye.
1st Safar 1441AH will InshAllah be on Monday 30 September 2019 for United Kingdom and Europe and on Tuesday 1 October 2019 for Sweden.