baby's first steps; celebration of a baby's first steps; opening to pedestrians (e.g. a new bridge)
baby's first steps; celebration of a baby's first steps
bridge-opening ceremony; first crossing of a bridge
okuizome; weaning ceremony; ritual meal for a 100-day old infant
outset; beginning; starting (things); resuming work after the New Year's vacation
first shopping of the year; first purchase of the year
initial playing of an instrument in the New Year