What day of the week was September 27, 1905?

The day of the week September 27th, 1905 fell on was a Wednesday. Isra and Mi'raj for Muslim people.

Conrad Heidkamp the German footballer (d. 1994) was born on 27 September in 1905.

The physics journal Annalen der Physik received Albert Einstein's paper "Does the Inertia of a Body Depend Upon Its Energy Content?" the introducing the equation E=mc².