The SndSeek function searches for a snd data record for a specific time.

The search is performed on the file with the descriptor given by the argument fid. The time to search for is specified by the arguments yr, mo,dy,hr,mt,sc giving the year, month, day, hour, minute and second.

The argument atme is a pointer to a double precision floating point number that is used to store the time of the closest record to the time requested expressed in seconds from 0:00UT January 1, 1970. If this argument is set to a NULL pointer then the time is not returned.