Lohri-Date
Every year Lohri is celebrated on Jan 13.
It is celebrated 1 day before Makarsankranti. (or Maghi).
Lohri falls in the month of Paush i.e. around 13 January, as per the Gregorian calendar.
The sun enters the Nirayana Makara rashi (Capricorn) on 14 January (99% of the time). However, there are times when the sun could enter the zodiac a day before or a day after 14 January. Regardless, Lohri is still celebrated a day before. Makara (Maghi) sankranti (Sangrand) marks beginning of the solar maagha masa, and Lohri must be celebrated on the last day of the solar Dhanur masa, which also marks the exit of the sun from Dhanu rashi (Sagittarius).
For the general latitude and longitude of Punjab, 13 January represents the day after which sunrise occurs progressively earlier in the morning, till about 10–12 June. After these days in June, sunrise begins to occur progressively later in the morning till about 10–12 January. Therefore the celebration of lohri on 13 January every year coincides with the shift from a progressively later sunrise to a progressively earlier sunrise.