There are 7 days in a week so it will take 7 years to have the same week day. 2006-2012 is only 6 years.
(this does not include leap day calculations)
2012 is a leap year; 2006 was not.
all else being the same, Monday
1995-2006 will interchange.2007-2012 will interchange
Advent does not always start on the same day because it is based on the liturgical calendar, which is tied to the date of Christmas. Advent begins on the fourth Sunday before Christmas, which means its start date can vary between November 27 and December 3. This variation is due to the way the calendar is structured, with Christmas falling on December 25 each year.
Yes
as far as i known everyone celebrates Christmas the same way no madder who they are
The astronaut, space ship and everything in it are all falling at the same speed (falling around the Earth is called ORBIT). If everything is falling at the same speed, they are effectively weightless. Its like falling in an elevator, if everything is falling at the same speed you will appear to be floating around the elevator. Until it reaches the basement.
Christmas always comes on the same date, December 25th. Christmas does not, however, always come on the same day. Christmas can fall on any day of the week.
no
This is variable, it depends on the way leap years fall in between any two given years. For example, Christmas of 1990 was a Tuesday but because of the occurrence of the leap year in 1996, Tuesday got skipped over and didn't occur again until 2001. However, since there are 2 leap years between 2007 and 2012, there is as few as five years between 2 Christmases falling on Tuesday (one in 2007 and this coming Christmas). Between the year falling after a leap year and six years later (e.g. 2001), since there is only one leap day between these years (2004), the Christmases of 2001 and 2007 were both Tuesdays and similarly, since there is only one leap year in-between 2012 and 2018 (2016), Christmas 2018 (six years later) will fall on EXACTLY the same day of the week as it will in 2012 (bear in mind that the 2018 calendar will not match exactly with a 2012 calendar, as 2018 only has 365 days, whilst 2012 has 366 days).
Most of the time, when a certain date falls on a certain weekday, in the following year it falls on the following weekday. But when the period between the date and the same date a year later includes the leap year date February 29, the next occurance of the date falls instead on the second weekday after the previous occurance. In 2006, Christmas fell on Monday. In 2007, Christmas fell on Tuesday. Because 2008 was a leap year, Christmas "skipped" Wednesday. In 2008, Christmas fell on Thursday. In 2009, Christmas fell on Friday. In 2010, Christmas fell on Saturday. In 2011, Christmas fell on Sunday. Because 2012 was a leap year, Christmas "skipped" Monday. In 2012, Christmas fell on Tuesday. In 2013, Christmas fell on Wednesday. In 2014, Christmas will fall on Thursday. In 2015, Christmas will fall on Friday. Because 2016 is a leap year, Christmas will "skip" Saturday. In 2016, Christmas will fall on Sunday. In 2017, Christmas will fall on Monday.
Skipping a Tuesday is basically the same as asking when was Christmas Day on a Wednesday in a leap year. That happens every 28 years. Going from the start of the 20th century to 2014, that happened in 1912, 1940, 1968 and 1996. It will next happen in 2024.