During the trial, the question of ending

During the trial, the question of ending

During the trial, the question arose about the end of the one-month period, which began on January 31. One party claimed that the deadline was February 28. From the point of view of the other party, if the term in half a month is considered to be 15 days, and the term per month is 30 days, then the term in question ends on March 2.
Determine the correct end of term.

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