Update
India's National Center for Seismology has not recorded any earthquake in Gorakhpur or in any region of Uttar Pradesh at that time.
Though people of Gorakhpur have reported of feeling tremor, the reason is still unknown.
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June 20, 2021: Hundreds of people shared of an earthquake tremor felt in Gorakhpur today at 02:26 am.
We checked national as well as international seismological sites but couldn't get any information about the earthquake.
We will update about this seismic event in Gorakhpur once it is verified.