The Astronomical New Moon is on Friday 24 January 2020 at 9.42pm. The crescent will not be visible on this day.
The calculations for crescent visibility on Saturday 25 January 2020 for London is as follows
Sunset 4.38 pm
Moonset 5.10pm
Crescent age. 18 hours 56 minutes
Moon lag time 31 minutes
Crescent altitude 3.38 degrees
Crescent elongation 9.29 degrees
The crescent will not be visible on this day
1st Jamadil Aakher 1441AH will thus be on Monday 27 January 2020 in Europe following the completion of 30 days of Jamadil Awwal