During a particular year, exactly ten persons – A through J – visited a certain city on five different days between January 1st and April 30th, in a non-leap year, such that on each of the five days, exactly two of the ten persons visited the city.

It is also known that

1. A, who did not visit the city after J, visited the city 28 days after F, who, in turn, did not visit the city with B. 2. J, who visited the city in March, visited the city at least 50 days before C visited but visited the city on the same day of the week as C. 3. D, who visited the city exactly 10 days before H, visited the city with G. 4. both E and I visited the city on February 10th, while E and H visited the city on the same day of the week.

On which day did B visit the city? Source : time.com