Ntp Sumertime changes at the Amerikan Date

[JonaB111]

Hello, on my Esp32 clock the time change today to summertime. However this should happen at the 28.3 not at the 14.3 in Germany. Im using Esp32's time Lib and i don't know how to change it.
Thanks for every Help!

[ESP_Sprite]

Esp32's time Lib

No such thing, you're probably using a 3rd party lib, one from a different SDK, or the ESP-IDF POSIX built-in functions. In case of the last, refer to the manual. In case you don't use that, please specify what you do use.

[JonaB111]

Honestly I am a bit confused, what im using, because i use the one which comes with the esp32 i just include time.h and the functions are the same like in ESP-IDF POSIX but the ntp syncronization is done differently. I folowed the guide on https://randomnerdtutorials.com/esp32-d ... r-arduino/

[WiFive]

The arduino function configTime does not let you set the dst rule and so defaults to US rule

[ESP_Sprite]

However, I think you should still be able to set the timezone using the TZ variable; refer to the manual page I linked earlier. Specifically, something like

Code: Select all

// Set timezone to China Standard Time
setenv("TZ", "CST-8", 1);
tzset()

and then using 'localtime' to get the time should work.