Topic: NYSC, What do this people mean by saying between now and December?

what do this people mean by saying between now and december?
Do they mean that september will not be posible? sum1 pls help me.

DEAR I'M REALLY NOT GETIN UR QUESTN RIGHT

BUT IF I CAN TRY I DID SAY DAT WEN ONE SAYS BTW NOW & DECEMBER

IT THEN MEANS THAT SEPT IS INCLUSIVE, BECAUSE THERE WILL BE NO

DECEMBER WITHOUT SEPT. I HOPE I GOT THE ANSWER RIGHT?

WHO'S WITH ME?