Knihovna Arduino pro nastavení a načítání interního času RTC na deskách ESP32
ESP32Time rtc(offset); // create an instance with a specifed offset in seconds
rtc.offset; // get or modify the current offset
setTime(30, 24, 15, 17, 1, 2021); // 17th Jan 2021 15:24:30
setTime(1609459200); // 1st Jan 2021 00:00:00
setTimeStruct(time); // set with time struct
getTime() // (String) 15:24:38
getDate() // (String) Sun, Jan 17 2021
getDate(true) // (String) Sunday, January 17 2021
getDateTime() // (String) Sun, Jan 17 2021 15:24:38
getDateTime(true) // (String) Sunday, January 17 2021 15:24:38
getTimeDate() // (String) 15:24:38 Sun, Jan 17 2021
getTimeDate(true) // (String) 15:24:38 Sunday, January 17 2021
getMicros() // (unsigned long) 723546
getMillis() // (unsigned long) 723
getEpoch() // (unsigned long) 1609459200
getLocalEpoch() // (unsigned long) 1609459200 // local epoch without offset
getSecond() // (int) 38 (0-59)
getMinute() // (int) 24 (0-59)
getHour() // (int) 3 (0-12)
getHour(true) // (int) 15 (0-23)
getAmPm() // (String) pm
getAmPm(false) // (String) PM
getDay() // (int) 17 (1-31)
getDayofWeek() // (int) 0 (0-6)
getDayofYear() // (int) 16 (0-365)
getMonth() // (int) 0 (0-11)
getYear() // (int) 2021
getTime("%A, %B %d %Y %H:%M:%S") // (String) returns time with specified format