Christmas and New Year's Day occur exactly one week apart. So a New Year's that occurs right after Christmas should be on the same day of the week. But in the year 2020 Christmas will occur on a Friday and New Year's on a Wednesday.
Why is this?
The trick is the New Year will belong to following year, one week apart. The same year's New Year date occurs on the different weekday.
Everyone knows that both Christmas Day and New year's Day always fall on the same day of the week. However, in 1939 the year of the outbreak of World War II, Christmas fell on a Monday and New Year's fell on a Sunday. Why?
Day after tomorrow is my birthday, on the same day next week falls 'Holi'. Today is Wednesday. What will be the day after 'Holi'?