McCartney wants to commemorate the founding anniversary of People for Ethical Treatment of Animals (PETA)on 12 January as he is an active member of the animal welfare organisation.

In a letter to Singh, McCartney said such a declaration would save countless animals and will be a celebration of life. He has requested Singh to declare every 12 January as a meat-free day  or vegetarian day, to celebrate vegetarianism and compassion towards animals.