Lunar date, similar to how [[Different Spellings and meanings of Vaar|Vaar]] is referring to days based on the solar calendar (the one we use traditionally today). ਥਿਤਿ is referring to the lunar calendar. This was learned from [[21 - ਤੀਰਥੁ ਤਪੁ ਦਇਆ ਦਤੁ ਦਾਨੁ ॥|Pauree 21 of Jap Ji Sahib]]. I wanted to save this to my [[My personal Gurbani dictionary]].