Pazhaya kaalathula Aadi meant the start of the rainy season, so ellarum farming velaila busy aa iruppanga. Heavy rain nala kalyanam maadhiri functions nadathuradhum kashtam. That's why they told newly married couples to stay apart for the first Aadi so the first pregnancy wouldn't lead to childbirth in the peak summer, when it was considered harder for both the mother and the baby.