Li restis tie la tutan semajnon (dum la tuta semajno),
he stayed there the whole week (during the whole week).
Sxi estis felicxa longan tempon (dum longa tempo),
she was happy a long time (during a long time; for a long time).
Ni rajdos tagon kaj nokton (dum tago kaj nokto),
we shall ride a day and a night (during a day and a night;
for a day and a night).
Mi venis dimancxon (je dimancxo), I came Sunday (on Sunday).
Tiun horon (je tiu horo), li forkuris,
that hour (at that hour) he escaped.

92. Although generally preferable, an accusative construction must
be carefully placed, or avoided altogether, if confusion with other
accusatives (expressing direction of motion, direct object, etc.) might
result:

Mi volas iri Bostonon je lundo, I wish to go to Boston on Monday.
Mi volas iri al Bostono lundon, I wish to go to Boston Monday.
Lundon mi volas iri Bostonon, Monday I wish to go to Boston.


ADVERBS AND THE ACCUSATIVE OF TIME.

93. An accusative of time, as well as a temporal adverb, may further
define or be defined by another expression of time:

Li venis longan tempon antaux tiu horo,
he came a long time before that hour.
Jaron post jaro ili restis tie,