Pesachim5: 1
תָּמִיד נִשְׁחָט בִּשְׁמוֹנֶה וּמֶחֱצָה, וְקָרֵב בְּתֵשַׁע וּמֶחֱצָה.  בְּעַרְבֵי פְסָחִים נִשְׁחָט בְּשֶׁבַע וּמֶחֱצָה, וְקָרֵב בִּשְׁמוֹנֶה וּמֶחֱצָה — בֵּין בַּחֹל בֵּין בַּשַּׁבָּת.  חָל עֶרֶב פֶּסַח לִהְיוֹת בְּעֶרֶב שַׁבָּת — נִשְׁחָט בְּשֵׁשׁ וּמֶחֱצָה וְקָרֵב בְּשֶׁבַע וּמֶחֱצָה, וְהַפֶּסַח אַחֲרָיו.
The [afternoon] daily offering is [usually] slaughtered at eight and a half [hours], and offered at nine and a half [hours].  On the eve of Pesach it is slaughtered at seven and a half [hours], and offered at eight and a half [hours], whether it is a weekday or the Sabbath.  [If] the eve of Pesach fell on the eve of the Sabbath, it is slaughtered at six and a half [hours], and offered at seven and a half [hours]. The pesach [-sacrifice is offered] after it.
Pesachim5: 2
הַפֶּסַח שֶׁשְּׁחָטוֹ שֶׁלֹּא לִשְׁמוֹ, וְקִבֵּל וְהִלֵּךְ וְזָרַק שֶׁלֹּא לִשְׁמוֹ, אוֹ לִשְׁמוֹ וְשֶׁלֹּא לִשְׁמוֹ, אוֹ שֶׁלֹּא לִשְׁמוֹ וְלִשְׁמוֹ — פָּסוּל.  כֵּיצַד לִשְׁמוֹ וְשֶׁלֹּא לִשְׁמוֹ? לְשֵׁם פֶּסַח וּלְשֵׁם שְׁלָמִים; שֶׁלֹּא לִשְׁמוֹ וְלִשְׁמוֹ — לְשֵׁם שְׁלָמִים וּלְשֵׁם פֶּסַח.
The pesach-offering that one slaughtered for some other designation, or [the Kohen] received, transported, or threw [its blood], for some other designation, or for its own designation and [then] for some other designation, or for some other designation and [then] for its own designation, is invalid.  What is an example of, “For its own designation and [then] for some other designation”? —- For the designation of a pesach-offering [first] and [then] for the designation of a peace-offering. [What is an example of,] “For some other designation and [then] for its own designation”? —- For the designation of a peace-offering and [then] for the designation of a pesach-offering.