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Excel Date data type

Date variables are stored as IEEE 64-bit (8-byte) floating-point numbers that represent dates ranging from 1 January 100, to 31 December 9999, and times from 0:00:00 to 23:59:59.

Any recognizable literal date values can be assigned to Date variables. Date literals must be enclosed within number signs (#), for example, #January 1, 1993# or #1 Jan 93#.

Date variables display dates according to the short date format recognized by your computer. Times display according to the time format (either 12-hour or 24-hour) recognized by your computer.

When other numeric types are converted to Date, values to the left of the decimal represent date information, while values to the right of the decimal represent time. Midnight is 0 and midday is 0.5.

Negative whole numbers represent dates before 30 December 1899.

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