Whenever
the following year sign come in play and the Mewa is 2 (nigna) than the year is
inauspicious known as Lonang (Black year) in Bhutanese.
Tiger
Pig
Monkey
Ox
Sheep
Dog Dragon
The back year are of two categories, Lonag Chewa (Worst
black year) and Lonag Chungwa (bad black year).
If Mewa 2 falls with Tiger, Pig and Monkey than the
year is Lonag Chewa.
If Mewa 2 falls with Ox, Sheep, Dog and Dragon than
it is Lonag Chungwa.
During black year, no important work is undertaken
viz. construction of houses, buying and selling of property, marriage etc.
However, starting Thendrel can be done before Lonang
sets in and the work can be continued in the black year.
Please note that if Mewa 2 falls with other animal signs
other than the above signs than it is not considered a black year.