According to Chinese calendar, today is the beginning of spring, commonly known as 立春.
One of the believes said that one this day, the egg will stand up. If you try, the egg will eventually stand up after few time of trying.
If you thought egg only can "stand" on this day, then you may try it on other day. Basically there is nothing to do with the day and time cause there is no extra force or gravity that lead to this phenomena.
Something about sciences of 立春. First when the sun reached geocentric longitude of 315 deg, then it is defined as beginning of spring. According to astronomy data, today around 6.20PM is the correct time to be defined as 立春.
So, finally it is dragon year although the new year is going to end soon.