<<There are sources for both, but lich'orah only the latter makes sense.<br>Of course there is still a chance that we will eat matzah that night,<br>not as a zecher lepesach sheni but as the pesach sheni itself. In
<br>which case matzah in the afternoon might very well be assur...>><br><br>Most halachot of Pesach (Rishon) do not apply to Pesach sheni<br>Thus one can eat matzah even though he has chametz in the house (imo babayit). Is there a source that one cannot eat matzoh erev pesach sheni (in second Temple days) so he will eat it le-ta-avon at night just like erev pesach.
<br><br>I agree that eating matzah the night of Iyar 15 makes more sense. nevertheless Tachanun is not said on Iyar 14 but is said on Iyar 15<br clear="all"><br>-- <br>Eli Turkel