| 13. 1. DateTime |
| 13. 1. 1. | Creating specific date/times: year, month, day, hour, minute, second | | |
| 13. 1. 2. | Create a DateTime with the current date and time | | |
| 13. 1. 3. | Create a TimeSpan representing 1 week and subtract from a DataTime | | |
| 13. 1. 4. | Add seconds to current time | | |
| 13. 1. 5. | Create a DateTime instance, specifying the year, month, and day | | |
| 13. 1. 6. | Create a DateTime instance, specifying the year, month, day, hour, minute, second, and millisecond | | |
| 13. 1. 7. | Create a DateTime instance, specifying the year, month, day, and JulianCalendar object | | |
| 13. 1. 8. | Create a DateTime instance, specifying the number of ticks | | |
| 13. 1. 9. | Create a TimeSpan instance, and add it to DateTime | | |
| 13. 1. 10. | Use the Now and UtcNow properties to get the currrent date and time | | |
| 13. 1. 11. | Display the Date, Day, DayOfWeek, DayOfYear, Ticks, and TimeOfDayProperties of DateTime | | |
| 13. 1. 12. | Use the Compare() method to compare DateTime instances | | |
| 13. 1. 13. | Use the overloaded less than operator (<) to compare two DateTime instances | | |
| 13. 1. 14. | Use the Equals() method to compare DateTime instances | | |
| 13. 1. 15. | Use the DaysInMonth() method to retrieve the number of days in a particular month and year | | |
| 13. 1. 16. | Use the IsLeapYear() method to determine if a particular year is a leap year | | |
| 13. 1. 17. | Use the overloaded addition operator (+) to add a TimeSpan to a DateTime | | |
| 13. 1. 18. | Use the overloaded subtraction operator (-) to subtract a TimeSpan from a DateTime | | |
| 13. 1. 19. | Use the AddYears(), AddMonths(), AddDays(), AddMinutes(), and AddSeconds() methods to add periods to a DateTime | | |
| 13. 1. 20. | Use the ToFileTime() method to convert a DateTime to an operating system file timestamp | | |
| 13. 1. 21. | Use the FromFileTime() method to convertan operating system file timestamp to a DateTime | | |
