Int 21H Function 2AH
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▀ This function's register format is the same as that required for Int
21H Function 2BH (Set Date).
▀ This function can be used together with Int 21H Function 2BH to find
the day of the week for an arbitrary date. The current date is first
obtained with Function 2AH and saved. The date of interest is then set
with Function 2BH, and the day of the week for that date is obtained
with a subsequent call to Function 2AH. Finally, the current date is
restored with an additional call to Function 2BH, using the values ob-
tained with the original Function 2AH call.
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