date of date_account_created is greater than timestamp_first_active in Airbnb New User Bookings.ipynb

[kunalkakade]

date of date_account_created is greater than timestamp_first_active
u can check at Out[28]:
https://github.com/susanli2016/Machine-Learning-with-Python/blob/master/Airbnb%20New%20User%20Bookings.ipynb

	affiliate_channel	affiliate_provider	age	country_destination	date_account_created	first_affiliate_tracked	first_browser	first_device_type	gender	id	language	signup_app	signup_flow	signup_method	timestamp_first_active	date_account_created_day	date_account_created_month	date_account_created_year
direct	direct	56.0	US	2010-09-28	untracked	IE	Windows Desktop	FEMALE	4ft3gnwmtx	en	Web	3	basic	2009-06-09	Tuesday	9	2010
direct	direct	42.0	other	2011-12-05	untracked	Firefox	Mac Desktop	FEMALE	bjjt8pjhuk	en	Web	0	facebook	2009-10-31	Monday	12	2011
direct	direct	41.0	US	2010-09-14	untracked	Chrome	Mac Desktop	M	87mebub9p4	en	Web	0	basic	2009-12-08	Tuesday	9	2010
other	other	NaN	US	2010-01-01	omg	Chrome	Mac Desktop	M	osr2jwljor	en	Web	0	basic	2010-01-01	Friday	1	2010
other	craigslist	46.0	US	2010-01-02	untracked	Safari	Mac Desktop	FEMALE	lsw9q7uk0j	en	Web	0	basic	2010-01-02	Saturday