Eid Bonus - method or way to calculate daily or monthly bonus if someone joins late?

technical-taco
Dear Friends and others, Asslamu Alaikum, I want to know about Eid Bonus. Our company is planning to give eid bonus to anyone who joins earlier or late before eid. we want to provide 1 days bonus also if someone joins in that case too, so please help me uploading an excel sheet or others describing the method or way to calculate daily or monthly bonus if someone joins late.
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