Mr Whyte was 4 years old and had gone with his mother to Roachs' department store when the building began to crumble.
His mother quickly put him under a counter for protection.
Seventeen people lost their lives in the store - the most deaths in any single building during the earthquake.
Meanwhile, his sister and one of his cousins were across the road at a hairdresser's where both died.
Mr Whyte still recalls his mother's tears.
Despite his increasing years, he continues to attend the yearly commemoration.
We must never allow the stories of those who suffered so much on our region's darkest day to be forgotten.
And we must also be thankful for the strength and efforts of those who worked tirelessly in the rebuild to shape a city that we can enjoy and be proud of today.