Let us calculate 180 days from the date of manufacturing.
Days remaining in January = 17 days
In February = 28 days
In March = 31 days
In April = 30 days
In May = 31 days
In June = 30 days
Total days = 17 + 28 + 31 + 30 + 31 + 30 = 167 days
Remaining days = 180 – 167 = 13 days
Hence, the expiry date will be 13th July 2006.