BUG: Series constructor loses date unit of Timestamps #58300
Description
Pandas version checks
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I have checked that this issue has not already been reported.
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I have confirmed this bug exists on the latest version of pandas.
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I have confirmed this bug exists on the main branch of pandas.
Reproducible Example
>>> pd.Timestamp("2024-01-01 00:00:00").unit 's' >>> pd.Series([pd.Timestamp("2024-01-01 00:00:00")]).dt.unit 'ns' ### Issue Description I would expect the Series to maintain the unit of 's' ### Expected Behavior I would expect the Series to maintain the unit of 's' ### Installed Versions '3.0.0.dev0+681.g434fda08cf'