Explanation here:
AI 173: World’s longest all-women operated flight is ready for take off
With International Women’s Day round the corner, India’s national carrier airline, Air India, is all set to make history. Celebrating the power of women, the flight AI 173 that’ll take the non-stop Delhi-San Francisco route will set a record for being the world’s longest all-women operated and supported flight. The flight that departs from New Delhi on March 6 at 0235 hrs will land in San Francisco at 0600 hrs, having covered 17 long hours.
In other words, they got lost and went the wrong way.
I'll get my coat ...