Why would moving the prime meridian hasten the time when it would be necessary to drop a day from the calendar?
There is no basis in logic to have to subtract a day due to a change in the prime meridian.

Both the Julian &amp; Gregorian calendars require days to be added, not subtracted. It's why we have leap years.

Also, both the Julian &amp; Gregorian calendars were established centuries before the prime meridian was set in the 19th century. The formula for adding days &amp; creating leap years was set long before the prime meridian was even contemplated.