<p>503 day is supposed to be the 3rd of May (5/03), which is the Edward x Winry day, or Edwin day in short.</p>

<p>There are two reasons for this coming into existence.</p>

<p>First, there's a jeans brand called Edwin and one of their logos contains the number 503.</p>

<p><a href="https://i.sstatic.net/eAZNy.jpg" rel="noreferrer"><img src="https://i.sstatic.net/eAZNy.jpg" alt="enter image description here"></a></p>

<p>Second, when Winry goes to Central City she's in room 503 of the hotel.</p>

CC BY-SA 3.0
2017-09-18T13:18:02.513Z
Out of curiosity, do you know where/when did this date start becoming a thing?
Ikaros
CC BY-SA 3.0
2017-09-18T15:33:01.120Z
@Ikaros I haven't found who and when used it first. But as I was reading around people were saying the author liked this brand of jeans and he put the room number into the series as something like a "confirmation". I know Winry was staying in Central City around chapter 45 I think, meaning this "day 503" thing is quite old. The oldest submission I found with this tag on deviantart is from is 2005.
Gorzius
CC BY-SA 3.0
2017-09-18T13:12:52.427Z
2017-09-18T13:12:52.427Z
Gorzius
<p>In multiple fanarts and fanfic websites of Full Metal Alchemist, I have seen mentions of the "503 day". Here's an example:</p>

<p><a href="https://i.sstatic.net/9X4VNm.jpg" rel="noreferrer"><img src="https://i.sstatic.net/9X4VNm.jpg" alt="Edward &amp; Winry 503"></a></p>

<p>I did read and watch Full Metal Alchemist and Full Metal Alchemist Brotherhood and I do not remember any mention of such a date. It does not match with the date Ed engraved into his State Alchemist Pocket Watch either.</p>

<p>What does the "503 day" refer to?</p>

CC BY-SA 3.0
2017-09-18T19:56:29.207Z
503 is [Service unavailable](https://httpstatuses.com/503), as most of us have seen in almost any website time to time.
h22
CC BY-SA 3.0
2017-09-19T07:22:50.160Z
@h22 I don't think this have any sense in this particular context, thought
Ikaros
CC BY-SA 3.0
2017-09-19T08:10:41.480Z
This is exactly that I think about when I see the number. I have never seen this number in any other context, and this is one of the two most common error codes, other being 404 (not found). While lots of them defined, others are rare (200 is Ok). But I agree might be just by chance.
h22
<fullmetal-alchemist-series>
What does the "503 day" refer to?
# What does the "503 day" refer to?
Posted by: username_0 on 2017-09-18
In multiple fanarts and fanfic websites of Full Metal Alchemist, I have seen mentions of the "503 day". Here's an example:

[![Edward & Winry 503](https://i.sstatic.net/9X4VNm.jpg)](https://i.sstatic.net/9X4VNm.jpg)

I did read and watch Full Metal Alchemist and Full Metal Alchemist Brotherhood and I do not remember any mention of such a date. It does not match with the date Ed engraved into his State Alchemist Pocket Watch either.

What does the "503 day" refer to?
**Tags:** fullmetal-alchemist-series
> **Comments:**
> **username_1**: 503 is [Service unavailable](https://httpstatuses.com/503), as most of us have seen in almost any website time to time.  
> **username_0**: @h22 I don't think this have any sense in this particular context, thought  
> **username_1**: This is exactly that I think about when I see the number. I have never seen this number in any other context, and this is one of the two most common error codes, other being 404 (not found). While lots of them defined, others are rare (200 is Ok). But I agree might be just by chance.  
---
## 1 answers
### Answer by username_2 on 2017-09-18. Score: 15 | Accepted answer
503 day is supposed to be the 3rd of May (5/03), which is the Edward x Winry day, or Edwin day in short.

There are two reasons for this coming into existence.

First, there's a jeans brand called Edwin and one of their logos contains the number 503.

[![enter image description here](https://i.sstatic.net/eAZNy.jpg)](https://i.sstatic.net/eAZNy.jpg)

Second, when Winry goes to Central City she's in room 503 of the hotel.
> **Comments:**
> **username_0** (2017-09-18): Out of curiosity, do you know where/when did this date start becoming a thing?  
> **username_2** (2017-09-18): @Ikaros I haven't found who and when used it first. But as I was reading around people were saying the author liked this brand of jeans and he put the room number into the series as something like a "confirmation". I know Winry was staying in Central City around chapter 45 I think, meaning this "day 503" thing is quite old. The oldest submission I found with this tag on deviantart is from is 2005.  
---
