pjiang, will you help on this? Thank you

pjiang，我的I-140 和485 是去年7月31號遞的。指紋已做。然後今年一月從CA 轉到 Taxas 中心。 每次我在網上查，都是：
The I140 IMMIGRANT PETITION FOR ALIEN WORKER was transferred and is now pending standard processing at a USCIS office.
那麽我的180天從哪天算？去年十月接到的receipt number.
謝謝！