<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def load_dostime(buf, pos):
 """Load LE32 dos timestamp"""

    stamp, pos = load_le32(buf, pos)
    tup = parse_dos_time(stamp)
    return to_datetime(tup), pos