How do I format the date?

[dg1444720]

Hello everybody! I have a question that may seem dumb, but I don't want to screw up while copying info to a blank. So here is my problem and hopefully one or more of you can provide me with advice or a solution:

When I purchase a dump that includes a track 1 and a track 2, I understand that the date is in this (****************=1234****************) part of the track 2. However, if I am using X2 to write this info to the EMV on the blank card, it asks for not just the month and year, but ALSO the exact day of the month. Do I simply put in a random date and it will only tell the ATM the month and year, or does an ATM (or a checkout system at a store) read the data with an inclusion of the exact day? Here is a quote from the tutorial I learned this from, the only difference is they actually read the EMV off of a stolen card and had all the data already read by X2, whereas in a dump you only have the 4 digits (year and month) in the track 2:
"
13. To find the expiration date, you must look at track2, and enter the 4 numbers after the "=" sign. For example, 2704. 04 is the month, and there are 30 days in April, so you write 30 after. i.e. 270430.

14. Enable the effective date setting, and paste the number from the expiration date in but go back four years. so it would have been 230430.
"
Is it always how many days are in that specific month? I know it may be a dumbass question but I just want to confirm. Thanks folks !

 

[Cloned Boy]

Example of track 2 of a card dump:
;4034351574462072=2402121111946800?

So, the numbers before the separator (the "=" symbol) are PAN (Primary Account Number), in fact, the card number itself. I hasten to assure you that this data was created using a service for generating “left” card numbers and has nothing to do with the real card.

The next group of four digits is the expiration date in YYMM format. Next comes the Service code. This is a three-digit number that allows you to set a number of restrictions, for example, prohibit the use of a magnetic stripe (when you try to swipe such a card, the requirement to use a chip will light up on the terminal screen). Service code values are described in more detail here. By tradition, all mentioned links will be duplicated at the end of the post.

Next come five more numbers - PVV (PIN Verification Value). The first digit is the so-called PIN Verification Key Index (PVKI) - the identifier (index) of the key that was used to calculate the specific PVV value. Typically in the range from 1 to 6, that is, the issuer can use up to six different keys to calculate/check PVV. The remaining four digits directly represent the PVV value. As you might guess, this number is used to verify the PIN card.

The last group of numbers in the sequence is CVV-1/CVC-1. This code is used for magnetic stripe authorization. This should not be confused with the CVV-2/CVC-2 printed on the back of the card near the signature area.

(c) Reading and emulating magnetic stripe cards