Hebrew to English Other Thesis documentation

"...presentando la tesis final,en el mes de ***Yiar 5757*** por tanto y de acuerdo al reglamento y las normas vigentes ..."

Roughly translated as "...submitted his final thesis, in the month of **Yiar 5757** therefore, and in accordance with the regulations and norms in force ... etc.."

Clearly it's a month - and I am told it's possibly May, but could someone clarify whether I need to put the name of the month here, or if it's usual to leave the Hebrew and put the month in brackets afterwards?

Thanks in advance ... :o)