Quarter Calculation

Infopath Field Function to Calculate the "Quarter" based on a previously entered date

1. Create a Field named "Date"
2. Create a Rule on the "Date" field
3. Enter this formula as the Value for the Rule: floor(((number(substring(., 6, 2)) + 11) / 3) mod 4) + 1
4. Set Condition to "None - This rule always applies"
5. Create a field named "Quarter"
6. Set the "Quarter" field's Data Type to: "Whole Number (Integer)"