How many days will it take to check in on the 19th and check out on the 30th?

Check-in on the 19th and check-out on the 30th are 12 days. Because from check-in on the 19th to check-out on the 30th, including ***12 days on the 19th, 20th, 21st, 22nd, 23rd, 24th, 25th, 26th, 27th, 28th, 29th and 30th. Therefore, the total *** is 12 days.

A date is calculated as the number of days from one date to another. In this question, check-in on the 30th is the end date, and check-in on the 19th is the start date, so we need to subtract the start date from the end date, and the result is the number of days between the two dates.

To calculate the hotel check-out date, you need to consider the following factors:

1. Booked check-in date: Determine the check-in date based on the check-in date at the time of booking.

2. Hotel regulations: Different hotels have different check-out time regulations. You need to understand the check-out time regulations of the hotel you booked.

3. Number of days of stay: Determine the date of departure based on the number of days of stay booked.

4. Number of guests: Determine the departure date based on the number of guests booked.

Based on the above factors, the hotel’s departure date can be calculated. Generally speaking, the check-out date is the next or third day after the check-in date. The specific calculation method needs to refer to the hotel's regulations and length of stay and other factors. It should be noted that the rules and length of stay may vary from hotel to hotel, so calculations need to be made on a case-by-case basis. At the same time, you also need to understand the relevant regulations and policies when booking a hotel to avoid unnecessary troubles.

To sum up, check-out on the 30th minus check-in on the 19th, totaling 12 days. If you need to calculate the number of days including the start date and end date, then you need to add 1 to the calculation result.

Legal basis:

"The People's Republic of China and the Civil Code"

Article 201

According to Japan, If the period is calculated by month or year, the starting day will not be counted and the calculation will start from the next day. If the last day of the period is a holiday, the day after the holiday shall be the last day of the period.