Project makes use of the Network Time protocol. "Network Time Protocol (NTP) is a networking protocol for clock synchronization between computer systems over packet-switched, variable-latency data networks. In operation since before 1985, NTP is one of the oldest Internet protocols in current use. NTP was designed by David L. Mills of the University of Delaware." --source "NTP Wikipedia"- NTP allows the elimination of the real time clock for time functions.
Original project web site "lives" in flash nand memory: http://tinyurl.com/Observations-weather has been online since around March 2017. ; powered by a "RobotDyn WiFi D1 Development Board" and a "Adafruit BME280 sensor for measuring temperature, humidity, and barometric pressure. providing Observations, Graphs, Files, and a Readme file; all pages text based on a white background.
New hosted web site: http://tinyurl.com/indpls-weather "000webhostapp.com" offers free web site hosting for education and learning. Website has "Home" page offering overview of project, "Observations" page is updated every fifteen minutes, "Graphed Observations" page display iframes from "ThingSpeak.com," "Video" page plays youtube video; "NTP Data Logger," and "Features" page is a description of the project. Inspiration for for adding new feature was Stephen Borsay's article: https://www.hackster.io/detox/send-esp8266-data-to-your-webpage-no-at-commands-7ebfec and his PHP code. Mr. Borsay is an instructor at "Udemy.com," his course "All About Arduino Wireless" is well presented; and covers topics about Arduino/ESP8266 wireless technologies. Mr. Borsay's PHP code receives the POST from the "NTP_Web_Interface.ino" sketch. POST method is developed with use of the "ESP8266HTTPClient" library. Project is unique in the fact that it does not use a Real Time Clock. Every 15 minutes; PHP code overwrites the "Observations" HTML page. All timing requirements are provided by using Network Time Protocol and a time server to derive the time and date used in the sketch.
RobotDyn WiFi D1" development board and the BME280 are required for this project..
Over the time I have been developing this project; have had allot of help from members of the various forums. Without their help this project would have been impossible. To those that helped and the owners of the various forums; thank you, your help most appreciated!
William