I have a date 2018-06-19 09:06:29. It is how it is stored in the database. I am using moment-timezone and calling this function.

function getDateString(t, tz) {
    return moment()
    .tz("America/Chicago")
    .format('l');
}

Here I know that my timezone is "America/Chicago" and it is "UTC-5 hours". I should get the time 5 hours before the time that I have passed as an argument.

This function was working perfectly until I upgraded my react. Can anyone know what might be the issue?

These are my current settings of react

"expo": "^27.0.0",
"moment": "^2.22.2",
"react": "16.3.1",
"react-moment": "^0.7.0",
"moment-timezone": "^0.5.17",
"react-native": ".0.0.tar.gz",
"react-native-swipeable": "^0.6.0",
"react-navigation": "1.5.11"

I have a date 2018-06-19 09:06:29. It is how it is stored in the database. I am using moment-timezone and calling this function.

function getDateString(t, tz) {
    return moment()
    .tz("America/Chicago")
    .format('l');
}

Here I know that my timezone is "America/Chicago" and it is "UTC-5 hours". I should get the time 5 hours before the time that I have passed as an argument.

This function was working perfectly until I upgraded my react. Can anyone know what might be the issue?

These are my current settings of react

"expo": "^27.0.0",
"moment": "^2.22.2",
"react": "16.3.1",
"react-moment": "^0.7.0",
"moment-timezone": "^0.5.17",
"react-native": "https://github./expo/react-native/archive/sdk-27.0.0.tar.gz",
"react-native-swipeable": "^0.6.0",
"react-navigation": "1.5.11"

• javascript
• datetime
• react-native
• timezone
• momentjs

Share Improve this question Follow edited Jun 19, 2018 at 12:14 Pac0 23.3k99 gold badges7373 silver badges8383 bronze badges asked Jun 19, 2018 at 10:27 Ali ZiaAli Zia 3,87555 gold badges3333 silver badges8282 bronze badges 2

• "This function was working perfectly" it seems to me that this function is not doing anything with what I guess is your date/time argument t – Pac0 Commented Jun 19, 2018 at 11:12
• also, please give exact output you get, and the one you used to get, there are often some confusions about what a date time is as data, and how it is represented as string / message, with all the fancy timezone and locale stuff – Pac0 Commented Jun 19, 2018 at 11:14

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1 Answer 1

Sorted by: Reset to default 4

As per my ments, not sure exactly what is going wrong (and how it used to work on your side), but here is how it should work to me :

1. Create a moment with your date time, specifying that this is expressed as utc, with moment.utc()

2. convert it to your timezone with moment.tz()

This would give something like :

function getDateString(t, tz) {
    return moment.utc(t, 'YYYY-MM-DD HH:mm:ss')
    .tz("America/Chicago")
    .format('l');
}