The Astronomical New Moon is on Thursday 26 December 2019 at 5:13 am. The crescent will not be visible on this day
The calculations for crescent visibility on Friday 27 December 2019 for London is as follows:
Sunset 3:59 pm
Moonset 5:24 pm
Crescent age 34 hours 46 minutes
Moon lag time 1 hour 14 minutes
Crescent altitude 7.38 degrees
Crescent elongation 17.23 degrees
The crescent can easily be seen with naked eye
1st Jamadil Awwal1441AH will inshallah be on Saturday 28 December 2019 in UK and Southern Europe.
1st Jamadil Awwal 1441 AH will inshallah be on Sunday 29 December in Sweden