Bug in date, the date recorded is different from the date inputted

[nus-pe-bot]

input: sleep add 1.04 /date 29/02/2023

I added a sleep cycle for the date 29/02/2023. However, that sleep input was saved as a sleep cycle for the date before that 28/02/2023.

This has caused other errors in other commands,
input: sleep add 1.04 /date 31/02/2024

Error message thrown claims that there is an existing sleep cycle for the date, when there isn't in sleep list.

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_{[original: nus-cs2113-AY2324S2/pe-interim#1251] [original labels: type.FunctionalityBug severity.High]}

[OKW32]

Team's Response

No details provided by team.

Duplicate status (if any):

Duplicate of #2563