This is a video explaining when the 7th month begins. I believe that a sliver crescent moon must be seen in the land of Israel. The end of the 6th month 29th day is on the evening of 9/20/2009, if the sliver crescent moon is seen in Jerusalem then Yom Teurah will be celebrated from the evening of 9/20/2009 to the evening of 9/21/2009. If the moon is not seen in Jerusalem on the evening of 9/20/2009 then Yom Teurah will be celebrated from the evening of 9/21/2009 to the evening of 9/22/2009.
Shabbat Shalom and may YHWH bless you on this set-apart day.
Person A knows His name as YHWH but chooses to use God because that is what is written in the Bible and what the church teaches. Person B knows His name as YHWH and chooses to continue to call Him YHWH and follows His commandments out of love.