Hello everyone! I made a clock using RTC1307 module and as it doesn't automatically autocorrect time I have to correct the time . My current time and date is set to 12:00 AM 0/0/1970. I want to know how to set it to present time

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It said done uploading but nothing happened and I tried the codes you gave and there was an error that one said

exit status 1

'tmElements_t' was not declared in this scope