one day

(rare) the first day of the month

gymnasium / gymnastics / fitness center

one day, 24 hours / the daytime, the period from dawn until dusk / (figuratively) a short period of time / one day, someday, an unspecified day / the first day of the month

予備: reserve

呼ぶ: to call (call out); to send for (someone); to call (something by a name)

四回: four times / 四階: fourth floor

呼ばれる: be treated to (a meal); Used other than figuratively or idiomatically: see 呼ぶ, れる.

all day

the first day of the month (solar or lunar calendar)