What is day?

A day is a unit of time equal to 24 hours, corresponding to one full rotation of the Earth. It is the primary unit for calendars, deadlines, event scheduling, and date-based calculations.

What is nanosecond?

A nanosecond is a unit of time equal to one billionth of a second. It is critical in computer processor timing, high-frequency trading, optical communications, and physics experiments.

Worked examples

1 day = 8.640000e+13 nanosecond

1 nanosecond = 1.000000e-09 second

More Time conversions

• Convert day to second
• Convert day to minute
• Convert day to hour
• Convert day to week
• Convert day to year (365 d)
• Convert day to millisecond
• Convert day to microsecond
• Convert day to nanosecond
• Convert day to century (100 yr)

Assumption: year is defined as 365 days and century values are approximate.