I recently came across a fascinating and not well known Bible apologetic (although many Jews are aware of it).

A high number of significant events – on both the good side and the calamity side – occurred in ancient and modern Jewish history on the main Jewish feast/fasts days. Some main Jewish feast/fasts days contain a significant amount of important events happening on their anniversaries.

Some authors and commentators on this subject have written the following:

I have begun to investigate this matter and I have written some commentary on it. It seems like a potent issue so far based on my initial research. I suggest reading the above website.

I may wish to co-author some future material on this matter when my research is completed. If anyone, especially "Anonymous", wishes to collaborate on this matter in terms of research and writing please inform Mr. Stett and he will forward your request.