You can use the DISPLAY command to find title and time information.
DISPLAY DUMP,TITLE,DSN=(08,23)
DISPLAY DUMP,TITLE
DISPLAY DUMP,TITLE,DSN=ALL
DISPLAY DUMP,TITLE,AUTODSN=5
DISPLAY DUMP,TITLE,DUMPID=ALL
SYSDSCAN 08
SYSDSCAN 23
See z/OS MVS IPCS Commands for information about SYSDSCAN.
If a data set listed in either command is empty or undefined, the system issues a message to tell why the title is not available.