Data commit

Task/Date-manipulation/Batch-File/date-manipulation.bat

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+@echo off
+
+call:Date_Manipulation "March 7 2009 7:30pm EST"
+call:Date_Manipulation "February 28 2009 2:28pm EST"
+call:Date_Manipulation "February 29 2000 9:52pm EST"
+pause>nul
+exit /b
+
+:Date_Manipulation
+setlocal enabledelayedexpansion
+
+:: These are the arrays we'll be using
+set daysinmonth=31 28 31 30 31 30 31 31 30 31 30 31
+set namesofmonths=January February March April May June July August September October November December
+
+:: Separate the date given ("%1") into respective variables. Note: For now the "am/pm" is attached to %minutes%
+for /f "tokens=1,2,3,4,5,6 delims=: " %%i in ("%~1") do (
+  set monthname=%%i
+  set day=%%j
+  set year=%%k
+  set hour=%%l
+  set minutes=%%m
+  set timezone=%%n
+)
+
+:: Separate the am/pm and the minutes value into different variables
+set ampm=%minutes:~2,2%
+set minutes=%minutes:~0,2%
+
+:: Check if the day needs to be changed based on the status of "am/pm"
+if %ampm%==pm (
+  set /a day+=1
+  set ampm=am
+) else (
+  set ampm=pm
+)
+
+:: Get the number corresponding to the month given
+set tempcount=0
+for %%i in (%namesofmonths%) do (
+  set /a tempcount+=1
+  if %monthname%==%%i set monthcount=!tempcount!
+)
+
+:: As this step may may be needed to repeat if the month needs to be changed, we add a label here
+:getdaysinthemonth
+:: Work out how many days are in the current month
+set tempcount=0
+for %%i in (%daysinmonth%) do (
+  set /a tempcount+=1
+  if %monthcount%==!tempcount! set daysinthemonth=%%i
+)
+
+:: If the month is February, check if it is a leap year. If so, add 1 to the amount of days in the month
+if %daysinthemonth%==28 (
+  set /a leapyearcheck=%year% %% 4
+  if !leapyearcheck!==0 set /a daysinthemonth+=1
+)
+
+:: Check if the month needs to be changed based on the current day and how many days there are in the current month
+if %day% gtr %daysinthemonth% (
+  set /a monthcount+=1
+  set day=1
+  if !monthcount! gtr 12 (
+    set monthcount=1
+    set /a year+=1
+  )
+  goto getdaysinthemonth
+)
+:: Everything from :getdaysinthemonth will be repeated once if the month needs to be changed
+
+:: This block is only required to change the name of the month for the output, however as you have %monthcount%, this is optional
+set tempcount=0
+for %%i in (%namesofmonths%) do (
+  set /a tempcount+=1
+  if %monthcount%==!tempcount! set monthname=%%i
+)
+
+echo Original    - %~1
+echo Manipulated - %monthname% %day% %year% %hour%:%minutes%%ampm% %timezone%
+exit /b