Seeing this I could not help but think of HWA's ban against birthdays which he plagiarized from the Jehovah's Witnesses. He certainly did not get such a prohibition from the Jewish community considering that one of the most solemn events for a Jew is one's bar mitzvah, which is a birthday. Because of HWA's prohibition Armstrongites are forbidden from even giving simple greetings such as this to their family members and friends.
(Or they could just ignore HWA's anti-social prohibition and, like PCG's Brad MacDonald during the Queen's birthday, give birthday greetings anyway.)
And even though Armstrongites refuse to celebrate birthdays it is written in Luke that the angels sang for joy at Jesus' birth.
And there were in the same country shepherds abiding in the field, keeping watch over their flock by night. And, lo, the angel of the Lord came upon them, and the glory of the Lord shone round about them: and they were sore afraid. And the angel said unto them, Fear not: for, behold, I bring you good tidings of great joy, which shall be to all people. For unto you is born this day in the city of David a Saviour, which is Christ the Lord. (Luke 2: 8-11.)
But somehow HWA and his imitators insist that it wrong to celebrate birthdays. What a terrible thing HWA did to those who trusted in him.