diff --git a/distros.json b/distros.json
index 0904010..e184064 100644
--- a/distros.json
+++ b/distros.json
@@ -1,5 +1,10 @@
 [
     ["OpenBSD", "https://mirror.csclub.uwaterloo.ca/OpenBSD/", "https://ftp.openbsd.org/pub/OpenBSD/", "timestamp"],
     ["kernel", "http://mirror.csclub.uwaterloo.ca/kernel.org/linux/kernel/next/", "https://mirrors.edge.kernel.org/pub/linux/kernel/next/", "sha256sums.asc"],
-    ["debian", "http://mirror.csclub.uwaterloo.ca/debian/project/trace/", "https://ftp-master.debian.org/debian/project/trace/", "master"]
+    ["debian", "http://mirror.csclub.uwaterloo.ca/debian/project/trace/", "https://ftp-master.debian.org/debian/project/trace/", "master"],
+    ["GNU", "http://mirror.csclub.uwaterloo.ca/gnu/", "https://mirrors.kernel.org/gnu/", "mirror-updated-timestamp.txt"],
+    ["almalinux", "https://mirror.csclub.uwaterloo.ca/almalinux/", "https://repo.almalinux.org/almalinux/", "TIME"],
+    ["alpine", "https://mirror.csclub.uwaterloo.ca/alpine/", "https://dl-cdn.alpinelinux.org/alpine/", "last-updated"],
+    ["Apache", "https://mirror.csclub.uwaterloo.ca/apache/zzz/", "https://downloads.apache.org/zzz/", "time.txt"],
+    ["CentOS", "https://mirror.csclub.uwaterloo.ca/centos/", "https://vault.centos.org/", "timestamp.txt"]
 ]
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diff --git a/main.py b/main.py
index 54699db..d3602df 100644
--- a/main.py
+++ b/main.py
@@ -19,6 +19,7 @@ import json # import json to read distro info stored in json file
 
 import datefinder # another date finding library
 
+# checker: gets the timestamp of the file inside the directory at the specified URL and returns it as a string
 def checker(directory_URL, file_name):
     page = requests.get(directory_URL).text
     indexOfFile = page.find(file_name)
@@ -52,10 +53,20 @@ if __name__ == "__main__":
         except requests.exceptions.RequestException as err:
             print(f"Error: {distro.name()}\n{err}")"""
     
+    # the implementation to check timestamps in distro mirror directory:
     distros = json.load(open('distros.json',))
-    print(distros)
-
+    # print(distros)
+    
     for distro in distros:
         print(distro[0] + ":")
         print("CSC mirror: " + checker(distro[1], distro[3]))
-        print("Official distro: " + checker(distro[2], distro[3]))
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+        print("Official distro: " + checker(distro[2], distro[3]))
+    # for eclipse, i couldn't find a directory from the official website, so i decided to temporarily cheat a little bit and peek at another person's mirror for explipse
+    # i just realized that my method doesn't just work for scraping html directories but everything returned by a URL (websites, files storing a time)
+    # i think i'll put checking arch, ceph, ecplipse on hold because it's more proper to check them using as.Date(17383, origin="1970-01-01") where the date is stored in 
+    #  a file as a number, but this would require another function and me looping through different functions. i think i'll do this later
+    #  corresponding jsons: ["Eclipse", "https://mirror.csclub.uwaterloo.ca/eclipse/", "http://eclipse.mirror.rafal.ca/", "TIME"],
+    #         ["Ceph", "https://mirror.csclub.uwaterloo.ca/ceph/", "https://download.ceph.com/", "timestamp"],
+    #  i don't know what to do with damnsmalllinux, it seems like an abandoned project. useful link: http://distro.ibiblio.org/damnsmall/
+    # the other function is probably probing mirror status sites like this: http://mirrors.cpan.org/
+    # maybe i can make a column in json that specifies the method for checking the particular mirror and that identifier will find a specific function to check the update
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