In or On?

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writeedge

Member
Nov 30, 2020
56
21
8
Lorong Ah Soo
www.write-edge.com
A 16-year-old Singaporean is in critical condition at National University Hospital (NUH) after he collapsed at home on the morning on Saturday (Jul. 3). He had received his first dose of the Covid-19 vaccine on Jun. 27.

Should it be "in the morning" instead?

Thanks!