The month of Chet ends on April 13. This month coincides with March - April of the Western/Georgian/Julian Calendar and is 31 days long. Also on March 14 every year, the Sikhs celebrate the Gur gadi (Guruship) of their seventh master, Guru Har Rai.
On April 14 starts the second month of the Sikh calendar called Vaisakh. During Chet the season in Punjab, the land of the Sikh Gurus is spring and the climate is moderate with good sunshine during the day. The winter cold has truly been completely uplifted. Many tourists from western countries visit north India during Chet to join in the festivities of the New year and Holla Mahalla.
The Guru tells us that in the month of Chet (March/April): ".... by meditating on the Lord of the Universe, a deep and profound joy arises. Meeting with the humble Saints, the Lord is found, as we chant His Name with our tongues. Those who have found God-blessed is their coming into this world. Those who live without Him, for even an instant-their lives are rendered useless. The Lord is totally pervading the water, the land, and all space. He is contained in the forests as well. Those who do not remember God-how much pain must they suffer! Those who dwell upon their God have great good fortune. My mind yearns for the Blessed Vision of the Lord's Darshan. O Nanak, my mind is so thirsty! I touch the feet of one who unites me with God in the month of Chayt.||2||" (SGGS page 133) .....More