Post Office – Llandeilo – Opening Hours & Branch Details Post Office is directly at 95 Rhosmaen Street, a 0.06 mile drive south from the centre of Llandeilo (a few minutes walk from Llandeilo New Road). The branch is an important addition to the locales of Pen-Y-Banc, Ffairfach, Rhosmaen, Abernant, Llanfihangel Uwch-Gwili, Llandeilo Town Centre and Court Henry. Its opening hours for today (Friday) are from 6:00 am – 7:00 pm. Refer to this page for information on Post Office Llandeilo, including the operating times, directions, contact info and more.