CSV Date/Time converter

Description: Development of a very simple compiled program including a very basic GUI to convert the date and time format of .csv-stored data to another format. dd/mm/yyyy -> YYYY-MM-DD hhmm -> hh:mm:ss hhmm -> hh dd/mm/yyyy -> YYYY dd/mm/yyyy -> mm (month) dd/mm/yyyy -> dddd (weekday) dd/mm/yyyy -> quarter (Q1, Q2, Q3, Q4) dd/mm/yyyy -> 08:00 - 16:00 -> Flag 1 dd/mm/yyyy -> 16:00-18:00 -> Flag 2 dd/mm/yyyy > 18:00-24:00 -> Flag3