If you wish to donate the amount in cash, the limit for donation under 80G is Rs 2000/-. If the donation amount exceeds Rs. 2000/-, you must donate in any mode other than cash for the donation to qualify for an 80G deduction.
In Sanatan Dharma, Vaishakh Purnima is considered highly sacred, meritorious, and spiritually significant day. It is regarded as an especially auspicious occasion for dharma (righteousness), penance, spiritual practices, holy bathing, donation, and worship of God.