Date Error on Updating Program Completion and Patient Program State

When updating program completion and Patient Program State to dates on Months February, April, June, September and November the dates are wrongly saved as date of next month.

Date on February is saved as date of March
Date on April is saved as date of May

So on, all months that does not have 31 days are wrongly saved.

Reproduced the error in OpenMRS 1.9.2 and 1.9.3