March 12, 21: Palindromic Day - 12321 March 13, 21: Perfect Square of Square - 130321 := 194 March 14, 21: 3.14.21 (American Style) - Pi Day References: Inder J. Taneja, Palindromic, Patterned Magic Sums, Composite, and Colored Patterns in Magic Squares. Zenodo, February 2, 2019, pp. 1-99, http://doi.org/10.5281/zenodo.2555741Inder J. Taneja, Perfect Square Sum Magic … Continue reading Three Special Days: March 12, 13 and 14, 2021 – Palindromic Day, Perfect Square of Square and Pi Day