https://www.railpost.in/frequency-reduction-of02303-02304-howrah-new-delhi-howrah-special-via-patna-02381-02382-howrah-new-delhi-howrah-special-via-dhanbad/
Frequency Reduction Of02303/02304 HOWRAH – NEW DELHI -HOWRAH SPECIAL (Via PATNA) & 02381/02382 HOWRAH – NEW DELHI - HOWRAH SPECIAL (Via DHANBAD)