Which date to use?

[imslp]

I was just wondering what the general consensus is on using date styles (old style or new style?), because the new composer submission page (in planning) will only tolerate one date...

[Carolus]

Unfortunately, this get to be a significant issue with Russian composers because everything before the Soviet era (1918) was originally expressed in the Julian calendar (=old style). If we're forced into one choice, I would vote for Gregorian (=New Style).