December 20, 2011
They never happen at the same time. The latest Diwal can start is mid November. The absolute earliest date Hanukkah can start is the last few days of november, but 90% of the time, it starts in December. A calendar of Diwali dates shows that it won't even be close to Hanukkah (with two weeks of each other) for at least the next 50 years.
December 6, 1904
Sundown on the night entering the first day is when Hanukkah begins, and the first candle is lit (plus the helper-candle).
It started on the evening of December 20th.
Friendship day is the first Sunday of August. In 2011 this was August 7 2011.
The first night of Hanukkah began at sundown on Dec. 1, 2010.
Hanukkah in 2008 starts December 21st at night when the first candle is lit. The first day is December 22 and it runs through December 29th.
Hanukkah was first celebrated in 164 BCE, starting on the 25th of Kislev of that year.See dates of Hanukkah for the next couple of decades on this linked page.See also:More about Hanukkah
The first night was December 1st, 2010. The first Day was December 2.
December 6, 1996
Hanukkah is an 8 day holiday. If you are talking about the first night of Hanukkah, then it has happened only four times in the last 100 years: in 1918, 1921, 1959 and 2005. If you are talking about years that Hanukkah overlapped with Christmas, there are more than 50 in the last 100 years. It overlapped in 2011. The next time will be 2016.
"Sunset, December 21 to sunset, December 29 The first Day of Hanukkah was December 22."