Question:

When is Sikhism New Year Nanakshahi 543 celebrated by Sikhs in 2011?
The Sikhism New Year coincides with the New Year of the Nanakshahi calendar. Nanakshahi months traditionally correspond with the calendar in use in India. An attempt to fix fluctuating Nanakshahi dates to correspond with Western calendars resulted in ongoing controversies and modifications in 2010. When does the Sikhism Nanakshahi New Year 543 begin in 2011?
Answer:

The Nanakshahi calendar year 1 begins in the year of Guru Nanak’s birth 1469 AD. The Sikhism New Year begins on the first day of Chet, in the first month of the Nanakshahi year 543, or on March 14, in 2011.