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time: since or time.Now().Sub(t) returns wrong when t is start date of the calender #61396

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ErfanMomeniii opened this issue Jul 17, 2023 · 1 comment
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time: since or time.Now().Sub(t) returns wrong when t is start date of the calender #61396

ErfanMomeniii opened this issue Jul 17, 2023 · 1 comment

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@ErfanMomeniii
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What version of Go are you using (go version)?

$ go version
1.20.3

What did you expect to see?

I wanted to calculate the number of seconds that have passed since the start of the calendar.

fmt.Println(time.Now().UTC().Sub(time.Date(1, 1, 1, 0, 0, 0, 0, time.UTC)))

it returned the wrong answer.

2562047h47m16.854775807s

from the number of hours, we can calculate 292 years but we are in 2023 now.
@ErfanMomeniii ErfanMomeniii changed the title time: since or time.Now().Sub(t) returns wrong when t is time.date of start of the calender time: since or time.Now().Sub(t) returns wrong when t is date of start of the calender Jul 17, 2023
@ErfanMomeniii ErfanMomeniii changed the title time: since or time.Now().Sub(t) returns wrong when t is date of start of the calender time: since or time.Now().Sub(t) returns wrong when t is start date of the calender Jul 17, 2023
@seankhliao
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it's unfortunate but int64 can only represent so much time at nanosecond resolution.

@seankhliao seankhliao closed this as not planned Won't fix, can't repro, duplicate, stale Jul 17, 2023
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@seankhliao @ErfanMomeniii