If Sunday is coded as January, Tuesday as March, Thursday as May, then Saturday will be coded as:

Let's look at the mapping logic between the days of the week and the months of the year:
* Sunday ($1^{\text{st}}$ day of the conventional week) $\to$ January ($1^{\text{st}}$ month of the year)
* Tuesday ($3^{\text{rd}}$ day of the week) $\to$ March ($3^{\text{rd}}$ month of the year)
* Thursday ($5^{\text{th}}$ day of the week) $\to$ May ($5^{\text{th}}$ month of the year)

Following this sequence, the days correspond directly to the months with the same numerical position in their respective sequences.

Saturday is the $7^{\text{th}}$ day of the week.
The $7^{\text{th}}$ month of the year is July.