Getting Time From NTP Server Made Easy

Every once in a while, you’ll come across an idea where saving time is a primary concern. For example, consider a relay that needs to be activated at a certain time, or a data logger that needs to store values ​​at precise intervals.

The first thing that comes to mind is the use of a real-time clock (RTC) chip. But since these chips are not accurate, we have to keep making manual adjustments to keep them in sync.

The solution here is to use the network time protocol (NTP). The ESP8266 NodeMCU has internet access, so you can get the day of the week and accurate time within a few milliseconds of Coordinated Universal Time (UTC) for free! And you don’t need any additional hardware circuitry.