#include "time.h"

void setup() {

    const time_t seconds = 1584039600; //  12-Mar-2020 20:00:00

    struct tm *tm = gmtime(&seconds);
    static char buf[32];
    strftime(buf, sizeof(buf), "%F %T %Z\n", tm);
    printf(buf);
}

void loop() {
  // put your main code here, to run repeatedly:

}