What is serial dating
Timesheet projects need to determine the elapsed time between and start and end times, or determine how many hours are overtime.
Age, Calculating Birthdays And Age Date Intervals, Formulas For Dates, Adding And Subtracting Dates, Differences Between Dates, Distributing Across Months Or Years Dates, Excel Serial Format Dates, Finding With VBA .Server computers may use a serial port as a control console for diagnostics.Network equipment (such as routers and switches) often use serial console for configuration.Serial ports are still used in these areas as they are simple, cheap and their console functions are highly standardized and widespread.A serial port requires very little supporting software from the host system.For example, 3PM on 19-Jan-2000 is stored internally as 36544.625.
When you enter a time without a value, such as entering into a cell, the date portion is a zero.
Modern computers without serial ports may require serial-to-USB converters to allow compatibility with RS-232 serial devices.
Serial ports are still used in applications such as industrial automation systems, scientific instruments, point of sale systems and some industrial and consumer products.
This mode is, called the 1904-mode or 1904-system, is used for compatibility with the Macintosh system.
The date mode applies to all dates within a workbook. Unless absolutely required, you should never use the 1904-system.
In the section above, it was said that the date portion of a serial date-time represents the number of days since 1900-Jan-0.