Practice 50 C# Date Time Programming Questions

Practice 50 C# Date Time Programming Questions

Q1. Write a C# program to display the current date and time.  
  Output: Current Date and Time: 01/03/2025 10:45:30

Q2. Write a C# program to display the current date in dd/MM/yyyy format.  
  Output: Current Date: 03/01/2025

Q3. Write a C# program to display the current time in HH:mm:ss format.  
  Output: Current Time: 10:45:30

Q4. Write a C# program to display the current day of the week.  
  Output: Day of the Week: Friday

Q5. Write a C# program to calculate the number of days between two dates.  
  Input: Start Date: 01/01/2025, End Date: 03/01/2025  
  Output: Number of Days: 2

Q6. Write a C# program to add 10 days to the current date.  
  Output: New Date: 13/01/2025

Q7. Write a C# program to subtract 5 days from the current date.  
  Output: New Date: 29/12/2024

Q8. Write a C# program to find the difference in months between two dates.  
  Input: Start Date: 01/01/2025, End Date: 01/04/2025  
  Output: Difference in Months: 3

Q9. Write a C# program to display the current date and time in yyyy-MM-dd HH:mm:ss format.  
  Output: 2025-01-03 10:45:30

Q10. Write a C# program to get the current year.  
   Output: Current Year: 2025

Q11. Write a C# program to get the current month.  
   Output: Current Month: 1

Q12. Write a C# program to get the current day of the month.  
   Output: Day of the Month: 3

Q13. Write a C# program to display the last day of the current month.  
   Output: Last Day of the Month: 31/01/2025

Q14. Write a C# program to get the current time in hh:mm:ss tt format.  
   Output: Current Time: 10:45:30 AM

Q15. Write a C# program to calculate the age of a person based on their birthdate.  
   Input: Birth Date: 15/06/1995  
   Output: Age: 29

Q16. Write a C# program to find the day of the week for a given date.  
   Input: Date: 03/01/2025  
   Output: Day: Friday

Q17. Write a C# program to display the number of days in the current month.  
   Output: Days in Current Month: 31

Q18. Write a C# program to get the current time and display it in 12-hour format with AM/PM.  
   Output: Current Time: 10:45:30 AM

Q19. Write a C# program to display the date 30 days from the current date.  
   Output: New Date: 02/02/2025

Q20. Write a C# program to check whether the current year is a leap year.  
   Output: Is Leap Year: False

Q21. Write a C# program to check if a given year is a leap year.  
   Input: Year: 2024  
   Output: Leap Year: True

Q22. Write a C# program to find the first day of the current month.  
   Output: First Day of the Month: 01/01/2025

Q23. Write a C# program to find the number of days in a given year.  
   Input: Year: 2025  
   Output: Number of Days: 365

Q24. Write a C# program to add 1 year to the current date.  
   Output: New Date: 03/01/2026

Q25. Write a C# program to add 1 month to the current date.  
   Output: New Date: 03/02/2025

Q26. Write a C# program to add 1 day to the current date.  
   Output: New Date: 04/01/2025

Q27. Write a C# program to subtract 1 year from the current date.  
   Output: New Date: 03/01/2024

Q28. Write a C# program to subtract 1 month from the current date.  
   Output: New Date: 03/12/2024

Q29. Write a C# program to find the current date and time in UTC.  
   Output: Current Date and Time in UTC: 2025-01-03 15:45:30

Q30. Write a C# program to convert a given date string to DateTime format.  
   Input: Date String: "03/01/2025"  
   Output: DateTime: 03/01/2025 00:00:00

Q31. Write a C# program to convert the current date into a string in yyyy/MM/dd format.  
   Output: Date: 2025/01/03

Q32. Write a C# program to find the number of seconds from a given date to the current date.  
   Input: Date: 01/01/2025  
   Output: Seconds: 2592000

Q33. Write a C# program to check if a given date is valid.  
   Input: Date: 31/02/2025  
   Output: Invalid Date

Q34. Write a C# program to calculate the difference between two dates in hours.  
   Input: Start Date: 01/01/2025 10:00:00, End Date: 01/01/2025 15:00:00  
   Output: Difference in Hours: 5

Q35. Write a C# program to calculate the difference between two dates in minutes.  
   Input: Start Date: 01/01/2025 10:00:00, End Date: 01/01/2025 10:45:00  
   Output: Difference in Minutes: 45

Q36. Write a C# program to format a date to yyyyMMdd format.  
   Input: Date: 03/01/2025  
   Output: Formatted Date: 20250103

Q37. Write a C# program to display the date and time 10 hours from the current time.  
   Output: New Date and Time: 03/01/2025 20:45:30

Q38. Write a C# program to display the date 10 days before the current date.  
   Output: New Date: 24/12/2024

Q39. Write a C# program to display the current time in HH:mm:ss format.  
   Output: Current Time: 10:45:30

Q40. Write a C# program to convert a DateTime object to a Unix timestamp.  
   Input: DateTime: 01/01/2025  
   Output: Unix Timestamp: 1735670400

Q41. Write a C# program to calculate the number of weeks between two dates.  
   Input: Start Date: 01/01/2025, End Date: 01/04/2025  
   Output: Weeks: 13

Q42. Write a C# program to check if a given date is in the future.  
   Input: Date: 03/01/2026  
   Output: Future Date

Q43. Write a C# program to check if a given date is in the past.  
   Input: Date: 01/01/2024  
   Output: Past Date

Q44. Write a C# program to calculate the difference in years between two dates.  
   Input: Start Date: 01/01/2020, End Date: 01/01/2025  
   Output: Difference in Years: 5

Q45. Write a C# program to find the date 6 months from today.  
   Output: New Date: 03/07/2025

Q46. Write a C# program to display the date of the previous Monday.  
   Output: Previous Monday: 29/12/2024

Q47. Write a C# program to find the day of the week for the first day of the year.  
   Input: Year: 2025  
   Output: First Day of the Year: Wednesday

Q48. Write a C# program to display the date of the next Sunday.  
   Output: Next Sunday: 05/01/2025

Q49. Write a C# program to check if the current date is the weekend.  
   Output: Is it Weekend: No

Q50. Write a C# program to find the last day of the previous month.  
   Output: Last Day of the Previous Month: 31/12/2024