Time

weekday()

Retrieve the weekday for the current or given time.

• 1 = Sunday
• 2 = Monday
• 3 = Tuesday
• 4 = Wednesday
• 5 = Thursday
• 6 = Friday
• 7 = Saturday

// Print the weekday number for the current time
Serial.print(Time.weekday());

// Print the weekday for the given time, in this case: 4
Serial.print(Time.weekday(1400647897));

Optional parameter: time_t (Unix timestamp), coordinated universal time (UTC)

Returns: Integer 1-7

If you have set a timezone using zone(), beginDST(), etc. the hour returned will be local time. You must still pass in UTC time, otherwise the time offset will be applied twice, potentially causing an incorrect day of week.