If you look closely, you can actually interpret Origins as existing over three days!
The first day reasonably ends between the two episodes. In part 1, students leave the school themselves and Mayor Bourgeois encourages everyone to stay at home until everything has been handled because itâs dangerous to be outside with Stoneheart, the first ever akumatized victim, on the loose. Marinette and Adrien become heroes in their homes after Master Fu somehow trespasses and bypasses two stay-at-home bakery owners and a crazy strict security-driven father with two guards despite being âstill youngâ but not young enough to transform (incredible /gen), and while everyone ends up being âsavedâ by Ladybug and Cat Noir, the excitement of the multiplied akuma turning into more Stonehearts could be enough to keep school canceled for the rest of the day. Miss Bustier once dismissed her class because of an akuma in Lady Wifi, not too long after Origins, so itâs likely that class did remain dismissed for the whole day. Due to the lack of immediate threat with the Stonehearts being frozen and the episode cutting, this makes for a reasonable time frame of a day peacefully passing.
At the beginning of part 2, in order with zero time skips besides scene changes, we see:
Nadja broadcasting about the frozen Stonehearts scattered around Paris and the hope of two new guardian angels to save the day,
Marinette holding her bowl in her kitchen, which could be interpreted as just finishing her long lunch, but because she is eating from a similar bowl with yogurt on the side like she did in part 1 with Sabine and later Tom (this time with just Tom), and because of Chloeâs quote later, we can assume this is her second day breakfast,
Adrien flaking on Nathalie in their usual study spot in the dining room (shown in part 1) to stop feeling stuck at home and finally go to ânormalâ school,
Marinette and Alya walking together to the school from the direction of the bakery, with Alya already having her Ladyblog fully designed and programmed, even showing off her custom Ladybug phone charm,
Marinette plotting to give Alya the ladybug miraculous due to her terrible self shame and Alyaâs confidence and love of superheroes, failing multiple times throughout the episode,
some of Miss Bustierâs class gathering around Ivan on a court bench gushing about what happened with Stoneheart (ending with Chloe bullying Ivan),
Adrien arriving at the school for the first time and convincing Nathalie to let him stay, then having Chloe and his fans swarm him as she excitedly introduces him to their classroom,
Chloe demonstrating to Adrien how sheâll get revenge with Marinette and Alya for their behavior the previous day by crafting the gum incident with Sabrina. Direct quote: âThe brats that sat here yesterday need a little attitude adjustment. Iâm just commanding a bit of respect, that's allâ,
and later Adrien complaining to Plagg, âMy first day at school and I didnât even make it past roll callâ â just because itâs Adrienâs official first day, that doesnât mean itâs everyoneâs first day. He stayed home with Nathalie for school throughout part 1, and besides possible unmentioned fencing, Adrien hadnât actually stepped one foot inside the school before becoming Cat Noir. He only knew Ladybug at the time, and not Marinette!
Day 3 arguably begins after the final Ladybug logo scene transition, which is directly after Ladybug purifies all of the akumas for the first time. Alya and Marinette walk together to the literature class once again, and instead of Marinette choosing the seat assigned by Chloe, she goes to the seat sheâs âalwaysâ been in and invites Alya to join her. This is a refreshing air of confidence and positivity for Marinette compared to the last two times the seats and Chloe were involved (Alya defending against Chloe and sharing the last macaron with Marinette, then the gum incident). Nino encourages Adrien to be himself to befriend Marinette, then a time skip happens where we see Adrien and Marinette together at the end of the rainy day, but because itâs directly related to what Nino said, there isnât a Ladybug logo transition. Time is a lot more spread out now, so it wouldnât be too strange or unrealistic to say that this third day was the first ever ânormalâ day of the school year, despite us not seeing most of it.