The Astronomical New Moon is on Monday 16 April 2018 at 02:57 BST. The crescent will not be visible on this day.
The calculations for Tuesday 17 April 2018 are as follows:
Sunset 8.02 pm
Crescent age 41 hours 5 minutes
Moon lag time 1 hour 44 minutes
Crescent altitude 14.48 degrees
Crescent elongation 22.45 degrees
The crescent can be easily seen on this day
1 Shaban 1439AH will be on Wednesday 18 April 2018.