CODEWITHSUNDEEP
iosswiftfirebasegoogle-cloud-firestoretimestamp
Jan Swoboda
Jan Swoboda

Reputation: 172

Convert the Time to GMT and then upload the timestamp to Firebase (Swift)

What I want to do: Convert the current time of the user to a GMT timestamp and then upload it to firebase.

Problem: The timestamp in my Firestore database is not the GMT timestamp, but the regular one with the unique timezone of the user.

My code:

let formatter = DateFormatter()
formatter.timeZone = TimeZone(secondsFromGMT: 0)
formatter.dateFormat = "yyyy-MM-dd HH:mm:ss Z"
let date = Date()

self.db.collection("posts").document(combined).setData([
    "time": date,
]) { err in
    if let err = err {
        print("Error writing document: \(err)")
    } else {
        print("Post Document successfully written!")
        print(date)
    }
}

What actually happens so far: I get 2020-06-26 17:57:40 +0000when I print out the date after I uploaded to firebase. This is the timestamp I want to upload.

But once I check firebase I see: enter image description here

What I tried:

Upvotes: 0

Views: 442

Answers (1)

robmathers
robmathers

Reputation: 3658

Those two timestamps are actually the same. i.e. 19:57:40 in UTC+2 is the same as 17:57:40 in UTC+0.

So I suspect the issue is what's actually being displayed in the Firebase console. There's likely a setting somewhere that controls how dates are displayed.

Upvotes: 2

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