Hi Eric.
I’m not sure I understood your question. 
I think the localtime() should give the correct winter and summer time, but I’m not sure.
As for the Arduino, we have these guides about time:

• https://randomnerdtutorials.com/epoch-unix-time-esp32-arduino/
• https://randomnerdtutorials.com/esp32-date-time-ntp-client-server-arduino/

There are functions to adjust daylight offset as well as time zone in this last tutorial.
I hope this helps.
Regards,
Sara
 

Sara, i couldn’t get the codes running on a esp8266, but i found on the internet this example, based on your website.
https://opencircuit.nl/Blog/WiFi-klok-met-de-ESP32-OLED/Code
in the file config.h is a rule: const int daylightOffset_sec = 0; // Daylight savings 0|3600
Here you have to change manually the summer and wintertime. That’s not what i want and what MicroPyhton does, that gives automatically the correct time.
 

Hi.
I’m sorry. I thought you were using an ESP32. For the ESP8266, we have these guides (similar to the previous ones – not automatic correct date and time, you need to set the parameters or do some calculations):

• https://randomnerdtutorials.com/epoch-unix-time-esp8266-nodemcu-arduino/
• https://randomnerdtutorials.com/esp8266-nodemcu-date-time-ntp-client-server-arduino/

Regards,
Sara

Thanks Sara, that’s what i needed to know.
So you have to change your sketch twice a year with arduino and you don’t have change it with MicroPython

There is an Arduino library that can do it for you.

Oh wow, that is just what i needed.
Many thanks Steve!!!!
I it works is a mystery to me, but who cares.

That’s exactly how I treat libraries. It works and I don’t really care how it works.