Female cats come into heat cycles every three to four
weeks during certain times of the year.
Not exact matches
2) Soil moisture: memory in soil moisture can last several
weeks which can influence the atmosphere through changes in evaporation and surface energy budget and can affect the forecast
of air temperature and precipitation in
certain areas
during certain times of the
year on intraseasonal
time scales;
Vacation
time is typically accrued at a
certain rate
during the
year so that you earn a fraction
of a vacation day for every
week you work.
This is often the case in situations in which a child lives with one parent
during certain parts
of a
year or
week, and lives with the other parent
during other
times.