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In short, the course covers the following topics:
Date and Time Fundamentals: Gregorian calendar, UTC, GMT, Atomic Time, How Computers Store Time, NTP, Date and Time Formats based on Standards and Specifications, Epoch Time and Unit Time, Date and Time Scope and Perspective
Time Zones: Definition (complex one), Daylight-Saving Time (DST), Providers such as IANA or TZDB and Microsoft
Date and Time in .NET: DateTime, DateTimeOffset, TimeZoneInfo, TimeSpan, Calendars, Stopwatch and many intrinsic details.
Noda Time: overview, core types, unit testing
A great number of best practices of working with Date and Time: arithmetic on dates, parsing, calculating of birthdays, scheduling events, date formats, ranges and other.