| ### Which date routines where

When you migrate your run-time to Language Environment, your VS COBOL II programs can get access to year 2000 ready date routines, although you need to use a CALL statement rather than native COBOL language:
CALL 'CEELOCT' USING LILIAN, SECONDS, GREGORN, FC
The four-digit year will be in the first four bytes of GREGORN.

If you migrate to the COBOL for OS/390 compiler as well, you can use the date/time intrinsic functions of the compiler for native COBOL support for year 2000 ready date functions. More details are provided in COBOL and Language Environment Intrinsics .

You will want to create and implement common date-handling routines for functions such as

- retrieval
- adding/subtracting time durations
- calculating day of the week
- date format conversions
  MDY, YMD, Julian, Lilian, etc.

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