Why do you add zero in January, February and October?

For specific provisions, please refer to the Annex of the Measures for Payment and Settlement formulated by the People's Bank of China.

The main purpose of adding zero before the capitalization date is to prevent the date from being tampered with, so zero must be added in the month of 1 2, 10, that is, zero month, zero month, because these three months may become eleven months and one hundred and twenty months before February (1 65438). The same is true of the writing principle of the day, and zero should be added before 1 ~ 10 and 20 and 30.

Of course, you can add zero before the month of capitalization from March to September, but it is generally customary to add zero before, but it is not necessary (because there is no possibility of rewriting in other months), but some bank counters have not carefully studied the payment and settlement methods, and will require that zero must be added before capitalization from March to September.