Seems like egg standing during specific events is not just limited to just the few events listed here. Here's another one to add to the list, lunar eclipses.

Group in Penang tries egg-balancing acts during lunar eclipse

It doesn't really sound like it is a unique occurrence. It could probably happen on any day of the week.

Another thing to consider, no two egg is identical. So it possible for some egg to be easier to stand than others. Eggs also change over time so being able to stand on one day and not on another is a possibility.

Read the article, they pretty much said it has nothing to do with the eclipse of the moon.

Read the article, the students were not the one making the claim.

Better yet, are there any source of information that support this in the first place?

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Added on February 10, 2012, 7:34 amBased on this-http://www.badastronomy.com/bad/misc/egg_history.html, seems that Lap Chun and the equinox event maybe related and equally wrong.

This post has been edited by Eventless: Feb 10 2012, 07:34 AM

Actually you have to prove that it is true, not the other way around. Is there an actual study that says that this can only happen during that day?

Given that singa89 managed to do it during normal days pretty much proves that it can be done anytime with the right egg. Based on the description of this myth by the TS, it is pretty much busted if you could do it during any other days.

The link in chiiupe post has pictures of people successfully doing that.

It's the second last picture with four students in it on the article. There's a paragraph describing it just next to the picture.

Who knows, maybe they did it during summer vacation when everyone is out of school for over a month? Then again, the egg that they used are much more symmetrical compared to the eggs that we have here. The pointed end is nearly like the blunt end.