Refers to a period of 24 hours as a unit of time.

दिन

English Usage: Each day brings new opportunities.

Hindi Usage: हर दिन नए अवसर लाता है।

Indicating every one of two or more considered individually.

प्रत्येक

English Usage: Each day, I go for a run in the morning.

Hindi Usage: हर दिन, मैं सुबह दौड़ने जाता हूँ।