all day

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

(literary) one day, 24 hours / (literary) the daytime, the period from dawn until dusk / (literary) (figuratively) a short period of time

(obsolete) one day, 24 hours / (obsolete) the daytime, the period from dawn until dusk

(rare, obsolete) (all senses appear to be identical as for hitohi above)

inside

中々: very, quite, considerably, rather, by no means (with negative verb)

very, quite, considerably, rather / by no means (with negative verb)

the Second Sino-Japanese War

all night