Act 06: The Transfer Student is Sailor Jupiter (転校生はセーラージュピター / Tenkousei wa Seeraa Jupitaa) 

00:08 Sign reads: 

Times for Use
7 a.m. to 8 p.m.
Use outside this time is prohibited

10:50 Envelope reads:

Miss Makoto Kino

12:43 Usagi's food

Usagi is eating senbei. A type of rice cracker. Usually not so big though.