timezone from php.ini
UTC
set the timezone in a program
America/Los_Angeles
using the date function from the computer
2024/04/26
assigning the timestamp to a variable
1714174083
you can create a timestamp for January 15, 2006 as by using the strtotime function
1137312000
today plus 1 day using the strtotime function
1714201200
subtracting $importantDate from today using the strtotime function
-86400 $today - $importantDate 1714114800 - 1714201200
86400 $importantDate - $today 1714201200 - 1714114800
-24 to find the amount of hours since the important date, look at the php program.