Nouns related to time

el segundo - the second

el minuto - the minute

la hora - the hour

el día - the day

la semana - the week

el mes - the month

el año - the year
Progress, Vol. 1
Progress, all volumes
Spaced repetition

Cramming works for tomorrow's test but not for long-term retention. Spreading your study sessions out over days and weeks is far more effective than covering everything in one sitting.