My days in SPV New Delhi

I studied in SPV from class 1 to XI and passed in 1969,  I am a resident of Kolkata since Oct  1976 .I retired as Principal Scientist and Head of Division of ICAR-Nirjaft-Kolkata.
Can any body help me with the dates/year of the following incidents
1. When Mr Atal Behari Vajpayee visited our school,  in sixties.
2.The Bus accident at the crossing of Lodhi Road On which a student died.

I remember the bhakti Geet 'Kadam kadam badhyaya ja' during the prayer again in sixties.
Football player Silverter Gomes nbwho belonged to the 1968 batch,  who still comes during the Sarawati puja, I was informed.
I remember Shankerda the great singer. His  baritone voice still reverberates in my ear.
Old memories are always sweet.