Post topics, source code that relate to the Arduino Platform

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By Anand Lobo
#24603 I've been searching, and so far what comes up is:
1) using the internal RTC with some other commandline programming method, not Arduino
2) using an external RTC with libraries.

So, my question is, are there functions I can call within the Arduino IDE to set and access the ESP8266 internal RTC? Is it possible?
If yes, would it work on something simple like the ESP-01, or would I need to solder special connections using a different PCB, or something else? I would like to be able to rely almost entirely on the ESP chip for my project.
I have not found clear answers to these questions with extensive Googling. Input is appreciated. :-)