The Astronomical New Moon is on Sunday 23 February 2020 at 3:32 pm. The crescent cannot be seen on this day
The calculations for crescent visibility on Monday 24 February 2020 for London is as follows
Crescent age 26 hours
Moon lag time 49 minutes
Crescent altitude 6.38 degrees
Crescent elongation 12.48 degrees
The crescent is visible only with optical aid
1st Rajab 1441AH will inshallah be on Wednesday 26 February 2020 in Europe.