import pandas as pd
import datetime
df = pd.DataFrame(
data=[["三菱UFJ銀行", "09/02 03:26"], ["三井住友銀行", "08/12 10:26"], ["みずほ銀行", "10/10 23:02"]],
columns=["金融機関", "更新日"],
)
df
df.dtypes
df["更新日"] = pd.to_datetime(df["更新日"], format="%m/%d %H:%M")
df
df.dtypes