How to? Different ways to calculate Difference in Days...

#1
One method to calculate the Difference in Days is with the @days function from the the ISO8601 Plugin, available from unm.edu/~cdye/dl/iso8601.zip

From the ISO8601.CHM file;

Code:
echo Only %@days[T,%@nextdate[12,25]] days until Christmas!
echo %@days[T,%@easter[*]] days until Easter.

Another method is to use the DateDiff function from VBScript;

Code:
@setlocal
@echo off
text > vbDateDiff.vbs
shell.writeln(DateDiff("d", Now, "12/25/2013"))
endtext
if exist vbDateDiff.vbs script vbDateDiff.vbs
if exist vbDateDiff.vbs del vbDateDiff.vbs > nul
endlocal

Another method is to use the @DAYSDIFF function from the FedUtils plugin, available from ftp://ftp.jpsoft.com/plugins/fedutils9.zip


Code:
echo %@DAYSDIFF[%_ISODATE,2012-12-25]
Some other examples can be found at;
http://jpsoft.com/forums/threads/days-until-december-25.1462/#post-7306

Share your method on how you calculate the Difference in Days.

Joe