On an average each letter takes nearly 3 hours from start to reach the dispatch
section. Furthermore, the dispatch section takes 5 hours on an average to despatch
the letter on the sameday and 20 hours if the letter is sent after 2.00 PM, as the
postal service is once a day. Depending on the urgency of the subject matter, a
letter takes a short cut to the dispatch section, which it occupies the same time
to be sent.