ASKTIME is a CICS verb that returns an ABSTIME (which is defined as PIC S9(15) COMP-3 in COBOL). ABSTIME is the number of milliseconds rounded to the nearest hundredth of a second since 0000 January 1, 1900. FORMATTIME is the CICS verb that converts an ABSTIME into recognizable data.
http://www.s390.ibm.com is the IBM web site. Find the CICS library on this web site (hint: the search box on the top right of the screen can help) and bookmark the location. This will allow you to answer questions like this without having to ask and wait for an answer.