Lucknow: Plunging mercury has forced schools across the city to remain shut till January 7.
The extension of winter vacation comes as cold wave conditions continue in most parts of north India. The minimum temperature in Lucknow has been around the seven-degree Celsius mark for most of this week.
With a minimum of six-degree Celsius predicted for Monday, many schools have decided to begin classes from 10 AM instead of usual early morning hours.
Cold day conditions have been prevailing over several parts of Uttar Pradesh, Punjab, Haryana, Delhi and Bihar while fog has also played havoc with railway and flight schedules.