eu_dst.h wrong calculation od Daylight Saving Time

Calculation use wrong conditions. Please correct
if (month == MARCH) {
if (mday < d)
return 0;
if (mday > d)
return ONE_HOUR;
if (hour < 2)
return 0;
return ONE_HOUR;
}
if (mday < d)
return ONE_HOUR;
if (mday > d)
return 0;
if (hour < 2)
return ONE_HOUR;
return 0;

And check also usa_dst.h if there isn't similar error
Vladimir

Start by reading eu_dst.h and compare its March and non-March conditions with the issue’s expected transitions. Then inspect usa_dst.h for the same kind of boundary error. Done means the European calculation is corrected and any equivalent USA error is addressed, with DST behavior checked at the stated day and hour boundaries.

Written by the indexing model from the issue text.