# Write a Pandas program to get the current date, oldest date and number of days between Current date and oldest date of Ufo dataset.  
 import pandas as pd
df = pd.read_csv(r'ufo.csv')
df['Date_time'] = df['Date_time'].astype('datetime64[ns]')
print("Original Dataframe:")
print(df.head())
print("\nCurrent date of Ufo dataset:")
print(df.Date_time.max())
print("\nOldest date of Ufo dataset:")
print(df.Date_time.min())
print("\nNumber of days between Current date and oldest date of Ufo dataset:")
print((df.Date_time.max() - df.Date_time.min()).days)
