diff --git a/Cargo.lock b/Cargo.lock
index 9c01c8e..4410e35 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -202,10 +202,21 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "58549f1842da3080ce63002102d5bc954c7bc843d4f47818e642abdc36253552"
 dependencies = [
  "chrono",
- "chrono-tz-build",
+ "chrono-tz-build 0.0.2",
  "phf 0.10.1",
 ]
 
+[[package]]
+name = "chrono-tz"
+version = "0.8.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f1369bc6b9e9a7dfdae2055f6ec151fe9c554a9d23d357c0237cee2e25eaabb7"
+dependencies = [
+ "chrono",
+ "chrono-tz-build 0.2.0",
+ "phf 0.11.2",
+]
+
 [[package]]
 name = "chrono-tz-build"
 version = "0.0.2"
@@ -214,7 +225,18 @@ checksum = "db058d493fb2f65f41861bfed7e3fe6335264a9f0f92710cab5bdf01fef09069"
 dependencies = [
  "parse-zoneinfo",
  "phf 0.10.1",
- "phf_codegen",
+ "phf_codegen 0.10.0",
+]
+
+[[package]]
+name = "chrono-tz-build"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2f5ebdc942f57ed96d560a6d1a459bae5851102a25d5bf89dc04ae453e31ecf"
+dependencies = [
+ "parse-zoneinfo",
+ "phf 0.11.2",
+ "phf_codegen 0.11.2",
 ]
 
 [[package]]
@@ -628,7 +650,7 @@ version = "2.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f80f221db1bc708b71128757b9396727c04de86968081e18e89b0575e03be071"
 dependencies = [
- "phf 0.11.1",
+ "phf 0.11.2",
 ]
 
 [[package]]
@@ -886,11 +908,12 @@ dependencies = [
 
 [[package]]
 name = "phf"
-version = "0.11.1"
+version = "0.11.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "928c6535de93548188ef63bb7c4036bd415cd8f36ad25af44b9789b2ee72a48c"
+checksum = "ade2d8b8f33c7333b51bcf0428d37e217e9f32192ae4772156f65063b8ce03dc"
 dependencies = [
- "phf_shared 0.11.1",
+ "phf_macros",
+ "phf_shared 0.11.2",
 ]
 
 [[package]]
@@ -899,10 +922,20 @@ version = "0.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4fb1c3a8bc4dd4e5cfce29b44ffc14bedd2ee294559a294e2a4d4c9e9a6a13cd"
 dependencies = [
- "phf_generator",
+ "phf_generator 0.10.0",
  "phf_shared 0.10.0",
 ]
 
+[[package]]
+name = "phf_codegen"
+version = "0.11.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e8d39688d359e6b34654d328e262234662d16cc0f60ec8dcbe5e718709342a5a"
+dependencies = [
+ "phf_generator 0.11.1",
+ "phf_shared 0.11.2",
+]
+
 [[package]]
 name = "phf_generator"
 version = "0.10.0"
@@ -913,6 +946,29 @@ dependencies = [
  "rand",
 ]
 
+[[package]]
+name = "phf_generator"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b1181c94580fa345f50f19d738aaa39c0ed30a600d95cb2d3e23f94266f14fbf"
+dependencies = [
+ "phf_shared 0.11.2",
+ "rand",
+]
+
+[[package]]
+name = "phf_macros"
+version = "0.11.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3444646e286606587e49f3bcf1679b8cef1dc2c5ecc29ddacaffc305180d464b"
+dependencies = [
+ "phf_generator 0.11.1",
+ "phf_shared 0.11.2",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "phf_shared"
 version = "0.10.0"
@@ -925,9 +981,9 @@ dependencies = [
 
 [[package]]
 name = "phf_shared"
-version = "0.11.1"
+version = "0.11.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e1fb5f6f826b772a8d4c0394209441e7d37cbbb967ae9c7e0e8134365c9ee676"
+checksum = "90fcb95eef784c2ac79119d1dd819e162b5da872ce6f3c3abe1e8ca1c082f72b"
 dependencies = [
  "siphasher",
 ]
@@ -1350,7 +1406,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a5ab29bb4f3e256ae6ad5c3e2775aa1f8829f2c0c101fc407bfd3a6df15c60c5"
 dependencies = [
  "chrono",
- "chrono-tz",
+ "chrono-tz 0.6.1",
  "globwalk",
  "humansize",
  "lazy_static",
@@ -1411,11 +1467,16 @@ name = "time-banner"
 version = "0.1.0"
 dependencies = [
  "axum",
+ "chrono",
+ "chrono-tz 0.8.3",
  "dotenvy",
  "envy",
  "futures",
  "lazy_static",
+ "phf 0.11.2",
+ "phf_codegen 0.11.2",
  "png",
+ "regex",
  "resvg",
  "serde",
  "serde_json",
diff --git a/Cargo.toml b/Cargo.toml
index 6899ed0..140d41e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,3 +20,14 @@ envy = "0.4.2"
 tera = "1.19.0"
 lazy_static = "1.4.0"
 timeago = "0.4.1"
+chrono-tz = "0.8.3"
+phf = { version = "0.11.2", features = ["macros"] }
+phf_codegen = "0.11.1"
+chrono = "0.4.26"
+
+[build-dependencies]
+chrono = "0.4.26"
+regex = "1.8.4"
+phf = { version = "0.11.1", default-features = false }
+phf_codegen = "0.11.1"
+lazy_static = "1.4.0"
diff --git a/build.rs b/build.rs
new file mode 100644
index 0000000..f3dab19
--- /dev/null
+++ b/build.rs
@@ -0,0 +1,72 @@
+use std::env;
+use std::fs::File;
+use std::io::{BufRead, BufReader, BufWriter, Write};
+use std::path::Path;
+use regex::Regex;
+use chrono::{FixedOffset};
+use lazy_static::lazy_static;
+
+lazy_static! {
+    static ref FULL_PATTERN: Regex = Regex::new(r"([A-Z]+)\s\t.+\s\tUTC([−+±]\d{2}(?::\d{2})?)").unwrap();
+    static ref OFFSET_PATTERN: Regex = Regex::new(r"([−+±])(\d{2}(?::\d{2})?)").unwrap();
+}
+
+const HOUR: u32 = 3600;
+
+fn parse_offset(raw_offset: &str) -> i32 {
+    let capture = OFFSET_PATTERN.captures(raw_offset).expect("RegEx failed to match offset");
+    println!("{}: {}", raw_offset, capture.get(1).expect("First group capture failed").as_str());
+
+    let is_west = capture.get(1).unwrap().as_str() == "−";
+    let time = capture.get(2).expect("Second group capture failed").as_str();
+    let (hours, minutes) = if time.contains(':') {
+        let mut split = time.split(':');
+        let hours = split.next().unwrap().parse::<u32>().unwrap();
+        let minutes = split.next().unwrap().parse::<u32>().unwrap();
+
+        (hours, minutes)
+    } else {
+        // Minutes not specified, assume 0
+        (time.parse::<u32>().unwrap(), 0)
+    };
+
+    let value = (hours * HOUR) + (minutes * 60);
+    return if is_west { value as i32 * -1 } else { value as i32 };
+}
+
+fn main() {
+    let path = Path::new(&env::var("OUT_DIR").unwrap()).join("codegen.rs");
+    let raw_tz = BufReader::new(File::open("./src/abbr_tz").unwrap());
+
+    let mut file = BufWriter::new(File::create(&path).unwrap());
+
+    let mut builder: phf_codegen::Map<String> = phf_codegen::Map::new();
+
+    for line in raw_tz.lines() {
+        let line = line.unwrap();
+        if line.starts_with('#') {
+            continue;
+        }
+
+        let capture = FULL_PATTERN.captures(&line).expect("RegEx failed to match line");
+
+        let abbreviation = capture.get(1).unwrap().as_str();
+        let raw_offset = capture.get(2).unwrap().as_str();
+
+        let offset = if !raw_offset.starts_with('±') {
+            parse_offset(raw_offset)
+        } else {
+            0
+        };
+
+        builder.entry(String::from(abbreviation), &format!("\"{}\"", offset).to_string());
+    }
+
+    write!(
+        &mut file,
+        "static TIMEZONES: phf::Map<&'static str, &'static str> = {}",
+        builder.build()
+    )
+        .unwrap();
+    write!(&mut file, ";\n").unwrap();
+}
\ No newline at end of file
diff --git a/src/abbr.rs b/src/abbr.rs
new file mode 100644
index 0000000..5b9d0bc
--- /dev/null
+++ b/src/abbr.rs
@@ -0,0 +1,35 @@
+use chrono::{FixedOffset, TimeZone};
+use chrono::format::Fixed;
+use phf::{Map, phf_map};
+
+const HOUR: i32 = 60 * 60;
+
+// Generated by build.rs, phf_codegen
+include!(concat!(env!("OUT_DIR"), "/codegen.rs"));
+
+/*
+    Parse an abbreviation of a timezone into a UTC offset.
+    Note: This is not standardized at all and is simply built on a reference of Time Zone abbreviations
+    from Wikipedia (as of 2023-7-20).
+ */
+pub fn parse_abbreviation(abbreviation: &str) -> Result<FixedOffset, String> {
+    let offset_integer_string = TIMEZONES.get(abbreviation);
+    if offset_integer_string.is_none() {
+        return Err("Failed to find abbreviation".to_string());
+    }
+
+    let offset = FixedOffset::east_opt(offset_integer_string.unwrap().parse().expect("Failed to parse stored offset"));
+    return offset.ok_or("Failed to parse offset".to_string());
+}
+
+
+#[cfg(test)]
+mod tests {
+    use chrono::FixedOffset;
+    use crate::abbr::parse_abbreviation;
+
+    #[test]
+    fn parse_offset() {
+        assert_eq!(parse_abbreviation("CST").unwrap(), FixedOffset::west_opt(6 * 3600).unwrap());
+    }
+}
\ No newline at end of file
diff --git a/src/abbr_tz b/src/abbr_tz
new file mode 100644
index 0000000..0a14362
--- /dev/null
+++ b/src/abbr_tz
@@ -0,0 +1,208 @@
+ACDT 	Australian Central Daylight Saving Time 	UTC+10:30
+ACST 	Australian Central Standard Time 	UTC+09:30
+ACT 	Acre Time 	UTC−05
+# ACT 	ASEAN Common Time (proposed) 	UTC+08:00
+ACWST 	Australian Central Western Standard Time (unofficial) 	UTC+08:45
+ADT 	Atlantic Daylight Time 	UTC−03
+AEDT 	Australian Eastern Daylight Saving Time 	UTC+11
+AEST 	Australian Eastern Standard Time 	UTC+10
+AET 	Australian Eastern Time 	UTC+10/UTC+11
+AFT 	Afghanistan Time 	UTC+04:30
+AKDT 	Alaska Daylight Time 	UTC−08
+AKST 	Alaska Standard Time 	UTC−09
+ALMT 	Alma-Ata Time[1] 	UTC+06
+AMST 	Amazon Summer Time (Brazil)[2] 	UTC−03
+AMT 	Amazon Time (Brazil)[3] 	UTC−04
+# AMT 	Armenia Time 	UTC+04
+ANAT 	Anadyr Time[4] 	UTC+12
+AQTT 	Aqtobe Time[5] 	UTC+05
+ART 	Argentina Time 	UTC−03
+# AST 	Arabia Standard Time 	UTC+03
+AST 	Atlantic Standard Time 	UTC−04
+AWST 	Australian Western Standard Time 	UTC+08
+AZOST 	Azores Summer Time 	UTC±00
+AZOT 	Azores Standard Time 	UTC−01
+AZT 	Azerbaijan Time 	UTC+04
+BNT 	Brunei Time 	UTC+08
+BIOT 	British Indian Ocean Time 	UTC+06
+BIT 	Baker Island Time 	UTC−12
+BOT 	Bolivia Time 	UTC−04
+BRST 	Brasília Summer Time 	UTC−02
+BRT 	Brasília Time 	UTC−03
+# BST 	Bangladesh Standard Time 	UTC+06
+# BST 	Bougainville Standard Time[6] 	UTC+11
+BST 	British Summer Time (British Standard Time from Mar 1968 to Oct 1971) 	UTC+01
+BTT 	Bhutan Time 	UTC+06
+CAT 	Central Africa Time 	UTC+02
+CCT 	Cocos Islands Time 	UTC+06:30
+CDT 	Central Daylight Time (North America) 	UTC−05
+# CDT 	Cuba Daylight Time[7] 	UTC−04
+CEST 	Central European Summer Time 	UTC+02
+CET 	Central European Time 	UTC+01
+CHADT 	Chatham Daylight Time 	UTC+13:45
+CHAST 	Chatham Standard Time 	UTC+12:45
+CHOT 	Choibalsan Standard Time 	UTC+08
+CHOST 	Choibalsan Summer Time 	UTC+09
+CHST 	Chamorro Standard Time 	UTC+10
+CHUT 	Chuuk Time 	UTC+10
+CIST 	Clipperton Island Standard Time 	UTC−08
+CKT 	Cook Island Time 	UTC−10
+CLST 	Chile Summer Time 	UTC−03
+CLT 	Chile Standard Time 	UTC−04
+COST 	Colombia Summer Time 	UTC−04
+COT 	Colombia Time 	UTC−05
+CST 	Central Standard Time (North America) 	UTC−06
+# CST 	China Standard Time 	UTC+08
+# CST 	Cuba Standard Time 	UTC−05
+CT 	Central Time 	UTC−06/UTC−05
+CVT 	Cape Verde Time 	UTC−01
+CWST 	Central Western Standard Time (Australia) unofficial 	UTC+08:45
+CXT 	Christmas Island Time 	UTC+07
+DAVT 	Davis Time 	UTC+07
+DDUT 	Dumont d'Urville Time 	UTC+10
+DFT 	AIX-specific equivalent of Central European Time[NB 1] 	UTC+01
+EASST 	Easter Island Summer Time 	UTC−05
+EAST 	Easter Island Standard Time 	UTC−06
+EAT 	East Africa Time 	UTC+03
+ECT 	Eastern Caribbean Time (does not recognise DST) 	UTC−04
+# ECT 	Ecuador Time 	UTC−05
+EDT 	Eastern Daylight Time (North America) 	UTC−04
+EEST 	Eastern European Summer Time 	UTC+03
+EET 	Eastern European Time 	UTC+02
+EGST 	Eastern Greenland Summer Time 	UTC±00
+EGT 	Eastern Greenland Time 	UTC−01
+EST 	Eastern Standard Time (North America) 	UTC−05
+ET 	Eastern Time (North America) 	UTC−05 / UTC−04
+FET 	Further-eastern European Time 	UTC+03
+FJT 	Fiji Time 	UTC+12
+FKST 	Falkland Islands Summer Time 	UTC−03
+FKT 	Falkland Islands Time 	UTC−04
+FNT 	Fernando de Noronha Time 	UTC−02
+GALT 	Galápagos Time 	UTC−06
+GAMT 	Gambier Islands Time 	UTC−09
+GET 	Georgia Standard Time 	UTC+04
+GFT 	French Guiana Time 	UTC−03
+GILT 	Gilbert Island Time 	UTC+12
+GIT 	Gambier Island Time 	UTC−09
+GMT 	Greenwich Mean Time 	UTC±00
+# GST 	South Georgia and the South Sandwich Islands Time 	UTC−02
+GST 	Gulf Standard Time 	UTC+04
+GYT 	Guyana Time 	UTC−04
+HDT 	Hawaii–Aleutian Daylight Time 	UTC−09
+HAEC 	Heure Avancée d'Europe Centrale French-language name for CEST 	UTC+02
+HST 	Hawaii–Aleutian Standard Time 	UTC−10
+HKT 	Hong Kong Time 	UTC+08
+HMT 	Heard and McDonald Islands Time 	UTC+05
+HOVST 	Hovd Summer Time (not used from 2017-present) 	UTC+08
+HOVT 	Hovd Time 	UTC+07
+ICT 	Indochina Time 	UTC+07
+IDLW 	International Date Line West time zone 	UTC−12
+IDT 	Israel Daylight Time 	UTC+03
+IOT 	Indian Ocean Time 	UTC+03
+IRDT 	Iran Daylight Time 	UTC+04:30
+IRKT 	Irkutsk Time 	UTC+08
+IRST 	Iran Standard Time 	UTC+03:30
+# IST 	Indian Standard Time 	UTC+05:30
+# IST 	Irish Standard Time[8] 	UTC+01
+IST 	Israel Standard Time 	UTC+02
+JST 	Japan Standard Time 	UTC+09
+KALT 	Kaliningrad Time 	UTC+02
+KGT 	Kyrgyzstan Time 	UTC+06
+KOST 	Kosrae Time 	UTC+11
+KRAT 	Krasnoyarsk Time 	UTC+07
+KST 	Korea Standard Time 	UTC+09
+LHST 	Lord Howe Standard Time 	UTC+10:30
+# LHST 	Lord Howe Summer Time 	UTC+11
+LINT 	Line Islands Time 	UTC+14
+MAGT 	Magadan Time 	UTC+12
+MART 	Marquesas Islands Time 	UTC−09:30
+MAWT 	Mawson Station Time 	UTC+05
+MDT 	Mountain Daylight Time (North America) 	UTC−06
+MET 	Middle European Time (same zone as CET) 	UTC+01
+MEST 	Middle European Summer Time (same zone as CEST) 	UTC+02
+MHT 	Marshall Islands Time 	UTC+12
+MIST 	Macquarie Island Station Time 	UTC+11
+MIT 	Marquesas Islands Time 	UTC−09:30
+MMT 	Myanmar Standard Time 	UTC+06:30
+MSK 	Moscow Time 	UTC+03
+# MST 	Malaysia Standard Time 	UTC+08
+MST 	Mountain Standard Time (North America) 	UTC−07
+MUT 	Mauritius Time 	UTC+04
+MVT 	Maldives Time 	UTC+05
+MYT 	Malaysia Time 	UTC+08
+NCT 	New Caledonia Time 	UTC+11
+NDT 	Newfoundland Daylight Time 	UTC−02:30
+NFT 	Norfolk Island Time 	UTC+11
+NOVT 	Novosibirsk Time [9] 	UTC+07
+NPT 	Nepal Time 	UTC+05:45
+NST 	Newfoundland Standard Time 	UTC−03:30
+NT 	Newfoundland Time 	UTC−03:30
+NUT 	Niue Time 	UTC−11
+NZDT 	New Zealand Daylight Time 	UTC+13
+NZST 	New Zealand Standard Time 	UTC+12
+OMST 	Omsk Time 	UTC+06
+ORAT 	Oral Time 	UTC+05
+PDT 	Pacific Daylight Time (North America) 	UTC−07
+PET 	Peru Time 	UTC−05
+PETT 	Kamchatka Time 	UTC+12
+PGT 	Papua New Guinea Time 	UTC+10
+PHOT 	Phoenix Island Time 	UTC+13
+PHT 	Philippine Time 	UTC+08
+PHST 	Philippine Standard Time 	UTC+08
+PKT 	Pakistan Standard Time 	UTC+05
+PMDT 	Saint Pierre and Miquelon Daylight Time 	UTC−02
+PMST 	Saint Pierre and Miquelon Standard Time 	UTC−03
+PONT 	Pohnpei Standard Time 	UTC+11
+PST 	Pacific Standard Time (North America) 	UTC−08
+PWT 	Palau Time[10] 	UTC+09
+PYST 	Paraguay Summer Time[11] 	UTC−03
+PYT 	Paraguay Time[12] 	UTC−04
+RET 	Réunion Time 	UTC+04
+ROTT 	Rothera Research Station Time 	UTC−03
+SAKT 	Sakhalin Island Time 	UTC+11
+SAMT 	Samara Time 	UTC+04
+SAST 	South African Standard Time 	UTC+02
+SBT 	Solomon Islands Time 	UTC+11
+SCT 	Seychelles Time 	UTC+04
+SDT 	Samoa Daylight Time 	UTC−10
+SGT 	Singapore Time 	UTC+08
+SLST 	Sri Lanka Standard Time 	UTC+05:30
+SRET 	Srednekolymsk Time 	UTC+11
+SRT 	Suriname Time 	UTC−03
+SST 	Samoa Standard Time 	UTC−11
+# SST 	Singapore Standard Time 	UTC+08
+SYOT 	Showa Station Time 	UTC+03
+TAHT 	Tahiti Time 	UTC−10
+THA 	Thailand Standard Time 	UTC+07
+TFT 	French Southern and Antarctic Time[13] 	UTC+05
+TJT 	Tajikistan Time 	UTC+05
+TKT 	Tokelau Time 	UTC+13
+TLT 	Timor Leste Time 	UTC+09
+TMT 	Turkmenistan Time 	UTC+05
+TRT 	Turkey Time 	UTC+03
+TOT 	Tonga Time 	UTC+13
+TVT 	Tuvalu Time 	UTC+12
+ULAST 	Ulaanbaatar Summer Time 	UTC+09
+ULAT 	Ulaanbaatar Standard Time 	UTC+08
+UTC 	Coordinated Universal Time 	UTC±00
+UYST 	Uruguay Summer Time 	UTC−02
+UYT 	Uruguay Standard Time 	UTC−03
+UZT 	Uzbekistan Time 	UTC+05
+VET 	Venezuelan Standard Time 	UTC−04
+VLAT 	Vladivostok Time 	UTC+10
+VOLT 	Volgograd Time 	UTC+03
+VOST 	Vostok Station Time 	UTC+06
+VUT 	Vanuatu Time 	UTC+11
+WAKT 	Wake Island Time 	UTC+12
+WAST 	West Africa Summer Time 	UTC+02
+WAT 	West Africa Time 	UTC+01
+WEST 	Western European Summer Time 	UTC+01
+WET 	Western European Time 	UTC±00
+WIB 	Western Indonesian Time 	UTC+07
+WIT 	Eastern Indonesian Time 	UTC+09
+WITA 	Central Indonesia Time 	UTC+08
+WGST 	West Greenland Summer Time[14] 	UTC−02
+WGT 	West Greenland Time[15] 	UTC−03
+WST 	Western Standard Time 	UTC+08
+YAKT 	Yakutsk Time 	UTC+09
+YEKT 	Yekaterinburg Time 	UTC+05
\ No newline at end of file