The screenshot does not provide enough information to conclude why there is a misalignment between the two Calendars on the first row. Can you provide a runnable example, which reproduces this?
On a side note, you can align the Calendars on the second row with:
.k-calendar .k-content td
The exact height value may depend on the font size.
Join us on our journey to create the world's most complete HTML 5 UI Framework - download Kendo UI