Daylight saving and Multi-sync, sync files.

Anmeldedatum: 31.10.2013 Beiträge: 40

I'm using the above to backup my SD card.
Whenever the time changes due to daylight saving, by one hour, MPE is copying my SD files again with suffix (1), (2), etc. It takes time and wastes space (4.5GB).
Is there a way to stop this?
I have duplicate twice a year, every time the Daylight saving occurs.

Verfasst am: So Apr 17, 2016 05:25

This happens to me too. Twice a year watching about 25 GB of files get recopied. It would be nice to fix this bug.

Verfasst am: Mo Apr 18, 2016 07:56

Bill Irwin hat Folgendes geschrieben:

It would be nice to fix this bug.

No bug, just a settings problem.

Verfasst am: Mi Apr 20, 2016 01:20

Koelner hat Folgendes geschrieben:

Bill Irwin hat Folgendes geschrieben:

It would be nice to fix this bug.

No bug, just a settings problem.

A settings problem that is solved how?

Anmeldedatum: 12.12.2015 Beiträge: 65 Wohnort: Italy

Me too I would like to know this "settings"...

The problem should be the same as sync'ing a FAT<->NTFS because FAT is not saving the date in UTC format but uses the local timezone on the device...

I know very well this problem because I had it since I was using a Palm Treo PDA!!
The sync config should have two more settings:
- ignore a difference in seconds up to 2 seconds (FAT limitation)
- ignore a difference in exactly 1 hour (but including the above 2 secs rounding)
More infos:
FileTime on MSDN
Beating the Daylight Savings Time bug and getting correct file modification times

Moderator Anmeldedatum: 19.04.2014 Beiträge: 17202

@Giangi
Thanks for this information!
Have you testet the SD-Format "ExFAT"?

Best regards icke

Anmeldedatum: 12.12.2015 Beiträge: 65 Wohnort: Italy

That should solve the problem, but it's almost not used anywhere... Cool

My Treo 650 was reading SD formatted in FAT/FAT32 only and I bet Android cannot read exFAT too!

Moderator Anmeldedatum: 19.04.2014 Beiträge: 17202

Giangi hat Folgendes geschrieben:

...and I bet Android cannot read exFAT too

This ist not correctly, my Galaxy S3 and S5 can read it and I do not know this problem

Anmeldedatum: 26.09.2012 Beiträge: 62 Wohnort: White Rock, BC Canada

Although these articles are interesting in describing why file times may be seen as different after a DST transition, it doesn't solve the problem. Is there a setting change in MPE, or in Windows 10, which I can make to eliminate it?

Anmeldedatum: 12.12.2015 Beiträge: 65 Wohnort: Italy

icke1954 hat Folgendes geschrieben:

This ist not correctly, my Galaxy S3 and S5 can read it and I do not know this problem

That's good to know, I may give it a try!

Bill Irwin hat Folgendes geschrieben:

Is there a setting change in MPE, or in Windows 10, which I can make to eliminate it?

It's the sync program that must be able to handle this, as far as I know MPE is not and there isn't anything on the OS.

In the past I used SyncToy and now I use FreeFileSync to do these kind of jobs (but not with my MotoG 2 because Android's MTP implementation is "very poor" to be polite) and both have a settings to handle DST change as I have described above...

Site Admin Anmeldedatum: 15.02.2006 Beiträge: 31872 Wohnort: Tirol

MyPhoneExplorer already knows this behaviour and he should not copy files if the timestamp diffrence is equal to the daylight diffrence. Which timezone you have set on syour devices? So i can check the behaviour on my PC...

Anmeldedatum: 26.09.2012 Beiträge: 62 Wohnort: White Rock, BC Canada

I am in Pacific time zone GMT-07:00 Pacific Daylight Time on my Galaxy S4 running CyanogenMod Android 5.1.1.

Windwos 10 states (UTC-08:00) Pacific Time (US & Canada)

Anmeldedatum: 12.12.2015 Beiträge: 65 Wohnort: Italy

FJ hat Folgendes geschrieben:

MyPhoneExplorer already knows this behaviour and he should not copy files if the timestamp diffrence is equal to the daylight diffrence.

I'm sorry FJ, you are right! My fault that I didn't double checked before writing... Embarassed

I think I didn't do a sync since last DST change...
I'm on GMT+1 (like you Smile

) and I did:
- uploaded a file on a folder into external memory
- executed a Phone->PC sync (whole external memory), files were copied
- put the phone in airplane mode
- powered off the adsl router
- I took screenshots of a folder both from MPE and from pc
- moved both phone and pc (Win7) forward to 31/10/2016 (DST ends on 30)
- I took another screenshots and found this:
+ on pc the files (NTFS disk) were moved back 1 hours
+ on MPE the files (external SD, FAT32) were still at the same time! Checked with ES File Explorer and indeed the file time didn't change! I guess is a strange Android behaviour... Question

- executed a Phone->PC sync (whole external memory), nothing copied!
- restored time on both pc and phone
+ on pc the files (NTFS disk) were moved forward 1 hours
+ on MPS the files (external SD, FAT32) were still at the same time, equal to the pc's one
- executed a Phone->PC sync (whole external memory), nothing copied!

So, other than the fact that time shown on Android isn't changed, everything is correct!

Anmeldedatum: 26.09.2012 Beiträge: 62 Wohnort: White Rock, BC Canada

I sync automatically every two hours between 9 am and 9 pm. The first sync after the DST change results in a permission window asking to approve edits to thousands of files that have not been changed.

Is this an Android issue where the DST time stamp doesn't get adjusted yet the Windows stamp does, resulting in MPE thinking all the files are an hour different?

Anmeldedatum: 31.10.2013 Beiträge: 40

With me, my PC is at (UTC+02:00) Jerusalem
On my SGS4 it's set to network provided time that is equal to GMT +03:00 Israel Daylight Time.

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