Wisconsin Time Zone PHP

America/Chicago

### To set or use this timezone in PHP:

#### 1. **Temporarily set it using `date_default_timezone_set`**:

date_default_timezone_set('America/Chicago');
echo date('Y-m-d H:i:s');

#### 2. **Permanently set it in `php.ini`**:
Open your `php.ini` and find:

;date.timezone =

Change it to:

date.timezone = America/Chicago

Then restart your web server (e.g., Apache or Nginx) if needed.

#### 3. **Using DateTime with timezone:**

$dt = new DateTime('now', new DateTimeZone('America/Chicago'));
echo $dt->format('Y-m-d H:i:s');

Let me know if you want to convert between time zones too.

– **CST** — Central Standard Time (UTC−06:00)
– **CDT** — Central Daylight Time (UTC−05:00)

### Example in PHP:

date_default_timezone_set('America/Chicago');
echo date('T'); // Outputs CST or CDT depending on the date

If you want both the abbreviation and the offset:

$dt = new DateTime('now', new DateTimeZone('America/Chicago'));
echo $dt->format('T (P)'); // e.g., CST (-06:00) or CDT (-05:00)

Let me know if you want to get this for a specific date!

Here are common **state abbreviations** associated with `America/Chicago`:

| State | Abbreviation |
|—————|————–|
| Wisconsin | **WI** |
| Illinois | **IL** |
| Texas (part) | **TX** |
| Minnesota | **MN** |
| Iowa | **IA** |
| Missouri | **MO** |
| Arkansas | **AR** |
| Louisiana | **LA** |
| Mississippi | **MS** |
| Alabama (part)| **AL** |
| Kansas (part) | **KS** |
| Nebraska (part)| **NE** |
| North Dakota (part) | **ND** |
| South Dakota (part) | **SD** |
| Oklahoma | **OK** |

So for **Wisconsin**, the state abbreviation is:

> ✅ **WI**

Let me know if you want to match timezones to other states too!

$timezoneArray = DateTimeZone::listIdentifiers(DateTimeZone::PER_COUNTRY, $countryCode);

…you’re passing a **country code** like `'IL'`, expecting **Illinois (US state)** — but PHP interprets `'IL'` as the **country code for Israel**, not Illinois.

### Key Detail:
PHP's `PER_COUNTRY` option uses **[ISO 3166-1 alpha-2 country codes](https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2)** — which are for **countries**, not US states.

So for **Illinois**, which is a **state in the USA**, you need to use:

$countryCode = 'US'; // Not 'IL'
$timezoneArray = DateTimeZone::listIdentifiers(DateTimeZone::PER_COUNTRY, $countryCode);

### Example:

$countryCode = 'US'; // United States
$timezoneArray = DateTimeZone::listIdentifiers(DateTimeZone::PER_COUNTRY, $countryCode);

print_r($timezoneArray);

This will include:

[...]
[4] => America/Chicago
[...]

> ✅ `America/Chicago` will now appear in the list.

Let me know if you want to map US states to their corresponding timezones!

You’d like to handle this in PHP — for example, convert it or confirm the timezone at that date.

—

### ✅ Timezone info for that date/location:
– Wisconsin (including Wisconsin Rapids) uses **America/Chicago** timezone.
– On **September 27, 1959**, **Daylight Saving Time (CDT)** would have **still been in effect**, so:
– The **offset** was **UTC−05:00**
– **Abbreviation**: `CDT`

—

### 🧠 In PHP:

“`php
$date = new DateTime('1959-09-27 01:33:00', new DateTimeZone('America/Chicago'));
echo $date->format('Y-m-d H:i:s T (

### 📍 Location: Wisconsin Rapids, Wisconsin
🗓️ Date & Time: **September 27, 1959, 01:33 AM**
🕰️ Timezone: `America/Chicago`

—

### 🧠 Was this in **Daylight Saving Time (DST)**?

✅ **Yes**, this date **was during DST** in 1959 in Wisconsin.

#### Historical DST Info:
In 1959, Daylight Saving Time in much of the U.S. (including Wisconsin) typically:
– **Started**: Last Sunday in **April**
– **Ended**: Last Sunday in **October**

So:
– **September 27, 1959** falls **within DST**.
– The **timezone abbreviation** would have been `CDT` (Central Daylight Time).
– The **UTC offset** would be **UTC−05:00**.

—

### 🧪 Confirm with PHP:

$date = new DateTime('1959-09-27 01:33:00', new DateTimeZone('America/Chicago'));
echo $date->format('Y-m-d H:i:s T (P)') . "n";
echo $date->format('I') ? 'DST is active' : 'DST is not active';

**Output:**

1959-09-27 01:33:00 CDT (-05:00)
DST is active

Let me know if you want to convert this to UTC or to another time zone!

Let's troubleshoot this step by step:

—

### ✅ Your example inputs:

$dob = '09/27/1959'; // mm/dd/yyyy
$timebirth = '01:33';
$timezone = 'America/Chicago';

You’re building the string like this:

$datetimeString = str_replace('/', '-', $dob) . ' ' . $timebirth;

This gives:

"09-27-1959 01:33"

—

### ⚠️ Problem:
PHP's `DateTime` might not reliably parse **MM-DD-YYYY** formats depending on locale — it prefers **YYYY-MM-DD**.

So:

"09-27-1959 01:33"

…might not always parse correctly or predictably.

—

### ✅ Solution:
Reformat the date to **`Y-m-d`** format first:

$dob = '09/27/1959'; // mm/dd/yyyy
$timebirth = '01:33';
$timezone = 'America/Chicago';

// Convert to DateTime-compatible format
$dobParts = explode('/', $dob);
$formattedDob = $dobParts[2] . '-' . $dobParts[0] . '-' . $dobParts[1]; // YYYY-MM-DD

$datetimeString = $formattedDob . ' ' . $timebirth;

try {
    $dt = new DateTime($datetimeString, new DateTimeZone($timezone));
    $dst = (int) $dt->format('I'); // 1 if DST, 0 if not
} catch (Exception $e) {
    $dst = 0;
}

—

### 🔍 Debug output:

You can log this to check:

echo "Datetime: " . $dt->format('Y-m-d H:i:s T (P)') . "n";
echo "DST Active? " . $dst . "n";

—

### ✅ Expected Output:

Datetime: 1959-09-27 01:33:00 CDT (-05:00)
DST Active? 1

Let me know if you'd like to include automatic handling for different locales or validate user input better.