Thanks for all the replies. I am relatively new to PHP so some of those suggestions flew past my head.
I currently have a paper with the desired times for each day of the year, which I can sit down and input into the computer depending on how I decide to store the info.
I don't have experience with databases but If I was pointed in the right direction, I can research and try to figure it out.
xyph: can you please elaborate on using an INI to store? do you have any link or tip I can follow to look into that. Thanks
Also, I can use the php sunset feature, but I would like to learn another way (like the txt file with the data, or an INI? or database) because hopefully in the future I can use this coding for another similar project which goes as follows: example: show a certain time for a certain date frame so from Jan1-Jan19 show "6:30" and then from Jan20-Feb23 show "6:45" , etc.