gistfile1.txt

import pandas as pd
import datetime


now = datetime.datetime.now(pytz.timezone('Asia/Tokyo'))


df = pd.DataFrame({
        'タイトル' : [1, 2, 3],
        '掲載日' : ['2021/8/15', '2021/8/14', '2021/8/16']
    })

print(now)
df['掲載日'] = pd.to_datetime(df['掲載日'])
df_new = df.loc[df['掲載日'] >= now]
print(str(df_new))