Datever(tm) Calendar Calculator
Copyright (c) 1993 John B. Dougherty

Datever(tm) calendar calculator is a small DOS program designed
to compute the weekday and date for a given number of days added
to or subtracted from a given date.
Alternatively, Datever(tm) will return the number of days since
or until an input date. The computed date is the default reference
for a subsequent calculation.

Use of Datever(tm) past 30 days demonstrates acceptance
of copyright holder's offer of license 
to continue use of Datever(tm) for the consideration of 
$20 U.S. per single installation.

Please encourage relevant programming by registering 
useful shareware.

To Have a Look:
Log on to, or call with full path name the drive and directory 
containing DATEVER.EXE 

examples
	a:\datever
	c:\download\unpack\datever

To install:
Copying DATEVER.EXE to any directory on your PATH will enable 
bringing up DATEVER(tm) from anywhere in the DOS environment.

Using the INSTALL.COM utility is simple and ensures that the 
correct cpu-specific version of Datever(tm) will be copied to the 
directory you choose.  Log on to, or call the drive and directory
containing the decompressed archive with INSTALL.COM and files 
DATEVER.EXE, DVR286._XE, and DVR386._XE and Enter

	[[drive]:\[dir[\subd]] INSTALL drive:\directory

examples: 
	install c:\utils
	a:\install c:\wp51
	c:\download\unpack\install c:\windows

Use:
Datever(tm) is a single function application whose instructions
are always visible while in use.  

     Datever(tm) calculator        Thursday, 02-17-1994
     Copyright (c) 1993 John B. Dougherty
     To start over: <F6,Enter>  /  To exit: <F7,Enter>

     To determine the calendar date and day of the week
     for a given number of days from today,
     enter the number of days.
     You may enter a negative number to count days past.
     To reference any other date, hit Enter.

     Number of days:

The one additional feature is a shell to DOS function enabled by
keying function key F4 and Enter. Type EXIT at the DOS prompt to 
return to Datever(tm).

.PIF file:
If you have a 386+ cpu, configuring the .PIF with the options
"windowed" and "close window on exit" enabled is recommended.  
Use the default 128kb minimum required conventional memory.

TSRs
I run a batchfile which piggy-backs an assembly-written 
PC Magazine utility, Schedule, as a TSR to Datever(tm).
The batch file removes the TSR from memory after Datever(tm)
exits.  
This whole enchilada can be run in the MS DOS v.5 
Dosshell task switcher with the shell-to-DOS feature (F4) of
Datever(tm) available.  
Similarly, the batch file can be called from a WordPerfect macro. 
I use Alt-D to call a recording of [Ctrl-F1 2 datever <Enter>
(program running) <space>].  Use the full path name if Datever(tm)
is not in a directory on your path.  The <space> at the end of the
macro after the Datever(tm) session is to automatically return the
user to their document. No actions are recorded while Datever(tm)
is active.
I encourage the use of a memory swapping shell like Dosshell or
WordPerfect Works.  I have been playing around with a TSR version
of Datever(tm), exploring contentions with various programs'
handling of the keyboard interrupt; and have a beta release
available.  If you run DOS in text mode it should work as
conveniently as a macro call. Right now it just does not want to
share the keyboard interrupt.  


To get past the century-split limitation: 

To enter dates prior to 1950, enter the desired date in 1950,
then subtract 1461 days for each four years and 365 days for 
each year remaining:

     example:
     MM DD 1944 = (MM DD 1950)-(1461+(2*365))

Also, break queries down so you know the answer is less than 
32,768 days (89 years, 8 months, and 16 days) difference from 
the reference date.

Disclaimer of Warranty:

With respect to Datever(tm) Calendar Calculator and accompanying 
documentation: The copyright holder expressly disclaims any 
implied warranties of merchantability and fitness for a particular
purpose. No warranty is given that the material will work under 
all circumstances.  In no event shall the author be liable for any 
damages for any direct, indirect or consequential loss arising 
from the use of, or inability to use the software howsoever caused,
including but not limited to, loss of profit, data, or use, or 
special, incidental, or consequential damages or other similar
claims.

Registration:
Legal and real estate professionals may find Datever(tm) to be 
particularly useful and a bargain at $20.00 per single use license.
Site licenses are negotiable.
Calendaring, case management, and billable hours applications
are being developed by this author, and your registration will
encourage and expedite their completion.

               Thanks for having a look.

Single user license fee $20.00
(California add sales tax)

                         John B. Dougherty
                         PO Box 357
                         Morro Bay, CA 93443